- **Four Independent RS232 Ports:** Each port operates independently, allowing simultaneous communication with multiple serial devices. - **High-Performance Controller:** Utilizes the Moschip MCS9904 serial communication controller, compatible with MCS9900 architecture, providing robust data handling and reduced CPU load. - **PCI Express Interface:** Fully compliant with PCIe bus architecture, supporting plug-and-play installation and automatic resource allocation by the system BIOS. - **Flexible Baud Rate Configuration:** Each port supports software-programmable baud rates from 50 bps up to 115,200 bps, suitable for a wide range of serial communication devices. - **Automatic Resource Mapping:** I/O, memory, and IRQ assignments are automatically managed by the PCI BIOS, simplifying installation and configuration. - **DB37 Connector Interface:** The card features a DB37 female connector, which connects to an included breakout cable providing four DB9 male connectors for standard RS232 interfacing. - **Cross-Platform Compatibility:** Supports Windows 2000, XP, 2003, Vista, Windows 7, and Linux operating systems. - **Industrial-Grade Design:** Built for industrial control systems, automation, and data acquisition environments requiring stable and continuous serial communication. - **128-Byte FIFO Buffers:** Each transmit and receive channel includes a 128-byte FIFO buffer, minimizing CPU interrupts and improving overall system performance. - **Flow Control Support:** Supports both hardware (RTS/CTS) and software (Xon/Xoff) flow control mechanisms. - **Compact Form Factor:** Standard PCIe bracket design with compact dimensions suitable for most PC/AT systems. - **Wide Environmental Tolerance:** Designed to operate in environments with temperatures from 0°C to 55°C and humidity up to 95% RH.

Manufacturer: Rayon

Category: RS232 4-Ports

- **Four Independent RS232 Serial Ports:** Provides four asynchronous serial communication channels via ISA bus interface. - **16550A UART Compatibility:** Each port uses a 16550A‑compatible UART with 16‑byte transmit and receive FIFOs, ensuring efficient buffered communication and reduced CPU overhead. - **High‑Speed Data Transmission:** Supports baud rates from **50 bps up to 115,200 bps**, software‑selectable per port. - **Plug‑and‑Play ISA Interface:** Designed for standard ISA bus systems, allowing easy integration into legacy PC/AT architectures. - **Flexible Connector Options:** Includes a **DB37 female connector** on the card with a breakout cable to **four DB9 male** connectors (or optional **four DB25 male** connectors on request). - **Multi‑Operating System Support:** Compatible with **DOS**, **Windows 95/98/ME/NT/2000/XP**, **Linux**, and **SCO OpenServer**. - **Dual‑Card System Support:** Up to **two A402 cards per system**, enabling up to eight serial ports in a single PC. - **Robust Design for Industrial and Embedded Use:** Engineered for reliability in industrial automation, instrumentation, and communication control systems. - **Flow Control Options:** Supports both **hardware (RTS/CTS)** and **software (XON/XOFF)** flow control mechanisms. - **Comprehensive Driver Package:** Includes drivers and installation utilities for multiple operating systems, ensuring broad compatibility and ease of deployment.

Manufacturer: Rayon

Category: RS232 4-Ports

- **Eight Independent RS232 Ports:** Provides eight fully functional serial ports for simultaneous communication with multiple RS232 devices. - **16550A UART Compatibility:** Each port integrates a 16550A-compatible UART, ensuring hardware buffering and efficient interrupt handling for high-speed data transmission. - **High-Speed Data Transfer:** Supports baud rates from 50 bps up to 115,200 bps, suitable for a wide range of serial communication requirements. - **ISA Bus Interface:** Designed for standard 16-bit ISA bus architecture, ensuring compatibility with legacy industrial PCs and embedded systems. - **Comprehensive OS Support:** Compatible with DOS, Windows 95/98/ME/NT/2000/XP, Linux, and SCO UNIX, providing flexibility across diverse system environments. - **Compact Design:** Small PCB footprint (122 mm × 101 mm) allows installation in space-constrained systems. - **Flexible Connector Options:** Includes a DB37 female to 8 × DB9 male breakout cable; optional DB25 male cable available upon request. - **Multi-Card Support:** Up to two A480 cards can be installed in a single system, expanding the total number of available serial ports to sixteen. - **Industrial Reliability:** Built with high-quality components and designed for continuous operation in demanding environments.

Manufacturer: Rayon

Category: RS232 4-Ports

- **Four Independent RS232 Ports:** Provides four fully functional RS232 serial ports on a single PCIe card, each capable of independent configuration and operation. - **Low Profile PCIe Form Factor:** Compact 92 × 69 mm PCB with a low-profile bracket suitable for small form factor and industrial PCs. - **High-Performance Controller:** Built around the **Moschip MCS9904** serial communication controller, offering advanced buffering and efficient interrupt handling. - **Flexible Baud Rate Configuration:** Each port supports baud rates from **50 to 115,200 bps**, suitable for a wide range of serial devices. - **Plug & Play PCIe Interface:** Automatic I/O, memory, and IRQ mapping assigned by the PCI BIOS, eliminating manual configuration. - **Comprehensive OS Support:** Compatible with **Windows 2000, XP, Vista, Windows 7**, and **Linux** operating systems. - **Industrial-Grade Reliability:** Designed for continuous operation in industrial environments with wide temperature and humidity tolerance. - **Included Multi-Port Cable:** Ships with a **DB44 male to 4 × DB9 male** breakout cable for easy connection to standard serial devices. - **Optional Cable Configurations:** Supports optional **DB44 male to 4 × DB25 male** cable for alternate connector requirements. - **Compatible with APCIe Family Drivers:** Uses the same driver architecture as other Rayon APCIe cards, simplifying multi-card installations. - **Ideal for Industrial Control Applications:** Optimized for SCADA systems, PLC communication, CNC machinery, and serial instrumentation.

Manufacturer: Rayon

Category: RS232 4-Ports

- **Four Independent RS-232 Ports:** Each port operates independently with its own I/O address and IRQ configuration. - **High-Speed Data Transfer:** Supports baud rates up to **921.6 kbps**, ensuring fast and reliable communication for demanding serial applications. - **TI550C UART with 32-Byte FIFO:** Provides efficient buffering and minimizes CPU overhead, preventing data loss during high-speed transmission. - **Custom ASIC Design:** Integrates multiple discrete components into a single chip, reducing board size to half-length and improving reliability. - **Software-Configurable Hardware:** No jumpers or DIP switches required; configuration is stored in onboard EEPROM and managed via software utilities. - **Flexible IRQ and I/O Addressing:** Supports IRQ 2–5, 7, 10–12, and 15, with full 16-bit AT bus architecture. - **Hardware Flow Control:** On-chip RTS/CTS and DTR/DSR flow control ensures stable communication with modems and other serial devices. - **Comprehensive OS Support:** Compatible with Windows NT, Windows 95/98, DOS, Windows 3.x, Linux, SCO UNIX/XENIX/OpenServer, QNX, FreeBSD, and OS/2. - **Diagnostic and Programming Tools:** Bundled with Moxa’s PComm (Windows) and API-232 (DOS) libraries for application development and port diagnostics. - **Compact Half-Size ISA Form Factor:** Dimensions of 157 mm × 83 mm allow installation in space-constrained systems. - **High Reliability:** ASIC design and FIFO buffering eliminate data loss even under heavy load. - **Connector Options:** Includes DB37-to-4×DB9 male cable (Opt4D) or optional DB37-to-4×DB25 male cable (Opt4C).

Manufacturer: Moxa

Category: RS232 4-Ports

- **Four RS-232 Ports:** Provides four independent asynchronous serial ports for multi-device connectivity. - **High-Speed Communication:** Supports data transfer rates from 50 bps up to 921.6 Kbps. - **TI 16C550C UART:** Each port uses a high-performance 16C550C or compatible UART with 32-byte transmit/receive FIFO buffers for efficient data handling. - **Plug and Play PCI Interface:** Fully compliant with PCI Specification 2.1; IRQ and I/O addresses are automatically assigned by the PCI BIOS—no jumpers or switches required. - **On-Chip Hardware Flow Control:** Ensures no data loss during high-speed transmission. - **Compact Half-Size Design:** Board dimensions of 120 mm × 100 mm allow installation in standard PCI slots without occupying excessive space. - **Optional Surge Protection:** The C104HS/PCI variant includes 2 kV surge protection for harsh industrial environments. - **Comprehensive OS Support:** Compatible with Windows NT, Windows 95/98, and DOS. - **Powerful Software Tools:** Bundled with Moxa’s _PComm_ Lite communication library and utilities for diagnostics, monitoring, and terminal emulation. - **Flexible Connectivity:** Includes a DB37-to-4×DB9 male fan-out cable (DB25 male option available). - **Reliable ASIC Design:** Ensures stable operation and long-term reliability in industrial and commercial applications.

Manufacturer: Moxa

Category: RS232 4-Ports

- **High-Speed Serial Communication:** Supports baud rates up to **921.6 kbps**, enabling fast and reliable data transfer for industrial and commercial applications. - **4 Independent RS-232 Ports:** Each port operates independently with its own I/O address and IRQ configuration. - **Surge Protection:** Built-in **2 kV isolation** for each port ensures protection against electrical surges and transient voltages. - **Advanced ASIC Design:** Custom-designed ASIC replaces multiple discrete ICs, reducing board size and improving reliability. - **16550 UART Compatibility:** Each port uses a 16550 or compatible UART with 16-byte FIFO buffers for efficient data handling and reduced CPU load. - **Software-Configurable Hardware:** No jumpers or DIP switches required; configuration is stored in on-board EEPROM and managed via software utility (Io-irq.exe). - **Flexible IRQ and I/O Addressing:** Supports IRQs 2, 3, 4, 5, 7, 10, 11, 12, and 15, and I/O address range from 0x0000 to 0xFFFF. - **Hardware Flow Control:** On-chip RTS/CTS flow control prevents data loss during high-speed transmission. - **Compact Half-Size ISA Board:** Dimensions of 157 mm × 83 mm allow installation in space-constrained systems. - **Multi-OS Support:** Compatible with Windows NT, Windows 95/98, DOS, Windows 3.x, Linux, SCO UNIX/XENIX/OpenServer, QNX, FreeBSD, and OS/2. - **Diagnostic and Programming Tools:** Bundled with Moxa’s PComm (Windows) and API-232 (DOS) libraries for application development and diagnostics. - **Comprehensive Surge and EMI Protection:** Designed for industrial environments with robust electrical protection.

Manufacturer: Moxa

Category: RS232 4-Ports

- **Four RS-232 Ports:** Provides four independent asynchronous serial communication channels. - **High-Speed Data Transfer:** Supports baud rates from 50 bps up to 921.6 Kbps. - **Advanced UART Controller:** Equipped with four 16C550C or compatible UARTs, each with 32-byte transmit and receive FIFOs for efficient data handling. - **Hardware Flow Control:** On-chip RTS/CTS flow control ensures no data loss during high-speed transmission. - **Surge Protection:** Integrated 2000 V surge protection on each port (C104HS/PCI model only) for enhanced reliability in harsh environments. - **Plug and Play PCI Interface:** Fully compliant with PCI Specification 2.1; IRQ and I/O addresses are automatically assigned by the system BIOS. - **Compact Half-Size Design:** Board dimensions of 120 mm × 100 mm allow installation in standard PCI slots. - **Operating System Support:** Compatible with Windows NT, Windows 95/98, and DOS. - **Software Tools:** Bundled with Moxa’s _PComm_ Lite communication library and utilities for diagnostics, monitoring, and terminal emulation. - **Flexible Connectivity:** Includes DB37-to-DB25 (Opt4C) or DB37-to-DB9 (Opt4D) fan-out cable options. - **Reliability and Stability:** ASIC-based design ensures consistent performance and long-term durability.

Manufacturer: Moxa

Category: RS232 4-Ports

- **Four Independent RS-232 Ports:** Each port operates independently with its own I/O address and IRQ configuration. - **Custom ASIC Design:** Reduces component count and board size to half-length ISA form factor. - **Software Configuration:** No jumpers or DIP switches; all settings are stored in onboard EEPROM and configured via software utility (Io-irq.exe). - **16550 UARTs:** Each port uses a TI 16550 UART with 16-byte FIFO buffers for efficient data handling. - **16-bit AT Bus Architecture:** Ensures compatibility with ISA and EISA systems and supports multiple IRQs. - **Operating System Support:** Drivers provided for Windows NT, Windows 95/98, DOS, and Windows 3.x; compatible with Linux, SCO UNIX/XENIX/OpenServer, QNX, FreeBSD, and OS/2. - **High Compatibility:** Fully compatible with other multiport boards using 16450/16550 UARTs. - **Quick Installation Mode:** Allows automatic configuration under Windows NT/95/98 without running DOS utilities. - **Comprehensive Software Tools:** Includes PComm (Windows) and API-232 (DOS/Windows 3.x) libraries for application development. - **Diagnostic and Monitoring Utilities:** Built-in tools for port testing, monitoring, and terminal emulation. - **Compact Half-Size Board:** Ideal for space-constrained industrial and commercial PC systems.

Manufacturer: Moxa

Category: RS232 4-Ports

- **Four Independent RS-232 Ports:** Provides four asynchronous serial communication channels for connecting multiple serial devices simultaneously. - **High-Speed Data Transmission:** Supports baud rates from **50 bps up to 921,600 bps**, ensuring compatibility with both legacy and high-speed serial devices. - **Advanced UART Controller:** Equipped with **Texas Instruments 16550C UART** featuring a **16-byte FIFO buffer** per port, reducing CPU load and improving data throughput. - **Surge and ESD Protection:** Built-in **25 kV ESD protection** on each port ensures reliable operation in electrically noisy industrial environments and safeguards connected equipment. - **Compact, Space-Saving Design:** Optimized for embedded systems with a **small footprint of 157 mm × 83 mm**, allowing installation in space-constrained enclosures. - **RJ45 Connectors:** Each serial port uses an **RJ45 interface**, simplifying cabling and enabling flexible connection options with RJ45-to-DB9 or RJ45-to-DB25 adapters. - **Software-Based Configuration:** No jumpers or DIP switches required; all port parameters (I/O address, IRQ, etc.) are configured via software utilities, simplifying setup and maintenance. - **AT Bus Interface:** Designed for **ISA/AT bus architecture**, ensuring compatibility with legacy industrial PCs and embedded controllers. - **Industrial-Grade Reliability:** Engineered for continuous operation in demanding environments, with robust electrical isolation and durable components.

Manufacturer: Moxa

Category: RS232 4-Ports

- **Four Independent RS-232 Ports:** Provides four fully functional serial communication channels for simultaneous data transmission and reception. - **High-Speed Data Transfer:** Supports baud rates from **50 bps up to 921,600 bps**, enabling compatibility with a wide range of serial devices and communication requirements. - **TI 16550C UART Chipset:** Each port is equipped with a **16-byte FIFO buffer**, ensuring efficient data handling, reduced CPU load, and minimized data loss during high-speed communication. - **Software-Based Configuration:** No jumpers or DIP switches are required; all port parameters (I/O address, IRQ, etc.) are configured via software utilities, simplifying installation and maintenance. - **Compact AT Form Factor:** Designed for embedded and industrial PC systems with limited space, measuring **157 mm x 83 mm**, allowing easy integration into standard AT slots. - **RJ45 Connectors:** Utilizes RJ45 connectors for serial port connections, offering a compact and secure interface that simplifies cabling and reduces clutter. - **Space-Saving Design:** Optimized for embedded systems and compact industrial PCs where board space is at a premium. - **Wide Baud Rate Range:** Supports both low-speed and high-speed serial communication, making it suitable for diverse industrial applications. - **Reliable Industrial-Grade Construction:** Engineered for continuous operation in demanding environments, ensuring long-term stability and durability. - **Moxa Software Support:** Compatible with Moxa’s configuration and diagnostic tools for easy setup, monitoring, and troubleshooting.

Manufacturer: Moxa

Category: RS232 4-Ports

- **Four Independent RS232 Ports:** Provides four fully functional RS232 serial interfaces for simultaneous communication with multiple serial devices. - **High-Speed Data Transfer:** Supports baud rates up to **921.6 kBd**, ensuring fast and reliable data transmission for demanding applications. - **Advanced UART Controller:** Equipped with **16550-compatible UARTs** featuring **128-byte FIFO buffers**, minimizing CPU load and improving data throughput. - **PCI Express Interface:** Utilizes the PCI Express bus standard for high-speed, low-latency communication with the host system. - **Compact Design:** Compact PCB dimensions of **114 mm x 104 mm**, suitable for standard and small form factor PCs. - **Low Power Requirement:** Operates solely on **3.3V DC** power supplied through the PCIe slot, eliminating the need for external power sources. - **Flexible Connectivity:** Includes **two DB9 male D-sub connectors** on the main bracket and an additional **SM23410 bracket** providing two more DB9 male connectors for COM2 and COM3. - **Scalable Configuration:** Supports installation of up to **four COM-8504 boards per PC**, allowing expansion up to 16 serial ports in a single system. - **Industrial-Grade Reliability:** Designed for continuous operation in industrial environments with robust electrical design and stable signal integrity. - **Plug-and-Play Compatibility:** Fully compliant with PCI Express standards, ensuring easy installation and automatic resource allocation by the operating system.

Manufacturer: JS Automation

Category: RS232 4-Ports

- **Four Independent RS-232 Ports:** Provides four fully functional RS-232 serial interfaces for connecting multiple serial devices simultaneously. - **PCI Express x1 Interface:** Fully compliant with PCI Express x1 specifications, ensuring compatibility with any PCIe slot (x1, x4, x8, x16). - **High-Speed Data Transmission:** Supports baud rates from 50 bps up to 921.6 Kbps for fast and stable data communication. - **Turbo Serial Engine™ Technology:** Incorporates Moxa’s proprietary high-performance serial communication chip (MU860) with 128-byte FIFO for optimized throughput and reduced CPU load. - **Comprehensive Flow Control:** Supports both hardware (RTS/CTS) and software (XON/XOFF) flow control for reliable data transfer. - **Full Modem Control Signals:** Ensures compatibility with a wide range of serial peripherals and legacy equipment. - **Low Profile Form Factor:** Compact 67.21 x 100 mm design suitable for small form factor PCs and embedded systems. - **15 kV ESD Protection:** On-board electrostatic discharge protection safeguards the board and connected devices from electrical surges. - **LED Indicators:** On-board transmit (red) and receive (green) LEDs for easy monitoring and maintenance. - **Wide OS Support:** Drivers available for Windows, Linux, Unix, DOS, and embedded operating systems. - **Flexible Cable Options:** Includes DB44-to-DB9 or DB44-to-DB25 breakout cables for versatile connectivity. - **Long-Term Reliability:** Backed by a 5-year manufacturer warranty and Moxa’s industrial-grade quality assurance.

Manufacturer: Moxa

Category: RS232 4-Ports

- **Universal PCI Compatibility:** Supports both 3.3V and 5V PCI slots, ensuring compatibility with virtually all modern PC servers and industrial computers. - **Four Independent RS-232 Ports:** Provides four fully independent serial communication channels for simultaneous data transmission and reception. - **High-Speed Data Transfer:** Supports baud rates from 50 bps up to 230.4 Kbps, suitable for a wide range of serial communication applications. - **Low-Profile Design:** Compact 65 × 120 mm form factor with an 80 mm low-profile bracket, ideal for space-constrained systems and rack-mounted servers. - **Embedded Surge Protection:** Integrated 16 kV ESD protection on all signal lines ensures robust operation in electrically noisy environments. - **Advanced UART Controller:** Equipped with MOXA’s proprietary UART (16C550C compatible) featuring a 64-byte FIFO for efficient data buffering and reduced CPU load. - **Flexible Connector Options:** Standard DB-44 female connector on the board, with included breakout cable to four DB9 male connectors (DB25 optional). - **Plug-and-Play Configuration:** BIOS automatically assigns I/O addresses and IRQs, simplifying installation and system integration. - **Comprehensive Software Support:** Includes MOXA Software CD with drivers and utilities for major operating systems. - **Regulatory Compliance:** Certified to CE and FCC standards for electromagnetic compatibility and safety.

Manufacturer: Moxa

Category: RS232 4-Ports

- **Four Independent RS-232 Ports:** Provides four asynchronous serial communication channels for connecting multiple serial devices simultaneously. - **Intelligent Onboard Processing:** Equipped with a **TMS320C203 RISC processor**, enabling intelligent data handling and reducing host CPU load. - **High-Performance UART:** Utilizes **TI 16550C UARTs** with **32-byte FIFO buffers** per port for efficient data buffering and reduced interrupt overhead. - **Large Onboard Memory:** Integrated **512 kB memory** for buffering and intelligent data management, ensuring smooth communication even under heavy data loads. - **Wide Baud Rate Range:** Supports data rates from **50 bps up to 921,600 bps**, accommodating both legacy and high-speed serial applications. - **Compact PCI Form Factor:** Designed as a **space-saving PCI card (160 × 95 mm)** suitable for embedded systems and compact industrial PCs. - **RJ45 Connectors:** Each port uses an **RJ45 interface**, simplifying cabling and reducing space requirements compared to traditional DB9 connectors. - **Software-Based Configuration:** No jumpers or DIP switches required; all port parameters and IRQ/DMA settings are configured via software utilities. - **Industrial Reliability:** Built for continuous operation in industrial environments, offering stable performance and long-term durability. - **Compatibility:** Fully compatible with standard PCI bus interfaces and supports major operating systems through Moxa’s driver suite.

Manufacturer: Moxa

Category: RS232 4-Ports

- **Four Independent RS232 Ports:** Provides four fully functional RS232 serial communication channels on a single PCIe card, enabling simultaneous multi-device connectivity. - **Oxford 16950 Compatible Controller:** Each port is based on an Oxford 16950-compatible UART, offering advanced buffering, high-speed data transfer, and compatibility with legacy serial devices. - **PCI Express Interface:** Utilizes the PCIe bus architecture for high-speed data throughput and plug-and-play installation. - **Flexible Baud Rate Configuration:** Supports baud rates from 50 bps up to 115200 bps per port, suitable for a wide range of serial communication devices. - **Memory-Mapped I/O:** System I/O and IRQ mapping are automatically assigned by the PCI BIOS, simplifying system integration and resource allocation. - **Compact Design:** The card measures 93 mm x 70 mm, fitting standard PCIe slots; a low-profile version (OPe954L) is available for compact systems. - **DB44 Connector Interface:** The main card features a DB44 female connector, which connects to an included breakout cable (R904) that provides four DB9 male connectors. - **Cross-Platform Driver Support:** Compatible with multiple operating systems including Windows 2000, XP, 2003, Vista, and Linux distributions. - **Industrial-Grade Reliability:** Designed for continuous operation in industrial environments with wide temperature and humidity tolerance. - **Scalable Product Family:** Part of Rayon’s OPe9xx series, offering 2-port (OPe952) and 8-port (OPe958) variants for flexible system expansion.

Manufacturer: Rayon

Category: RS232 4-Ports

- **Universal PCI Compatibility:** Supports both 3.3V and 5V PCI slots at 33 MHz, ensuring broad motherboard compatibility. - **Four Independent RS232 Ports:** Each port is fully 16550A UART compatible, supporting baud rates from 50 to 115,200 bps. - **5V Power on Pin 9:** Provides 5V output on the RI signal pin (pin 9) for powering external devices such as barcode readers, scanners, or serial peripherals. - **Plug & Play Configuration:** Automatic IRQ and I/O address mapping assigned by PCI BIOS; no manual configuration required. - **Surge Protection:** Integrated surge protection on TXD and RXD signal lines enhances reliability in industrial environments. - **16550A-Compatible UARTs:** Each port includes a 16-byte transmit and receive FIFO buffer, reducing CPU load and improving throughput. - **Operating System Support:** Compatible with DOS, Windows 95/98/Me/NT/2000/XP/Vista/7, Linux, SCO OpenServer, and UNIX systems. - **Compact Design:** 120 mm × 100 mm PCB form factor suitable for standard PCI slots. - **External Connectivity:** Includes DB37-to-4×DB9M cable (DB25M optional). - **Shared IRQ Support:** Allows multiple PCI cards to share a single interrupt line, optimizing system resources. - **Industrial Reliability:** Designed for continuous operation in environments with 0–55°C temperature and 10–95% relative humidity.

Manufacturer: Rayon

Category: RS232 4-Ports

- **Universal PCI Compatibility:** Operates in both 3.3V and 5V PCI slots (33 MHz), ensuring broad motherboard compatibility. - **Four Independent RS232 Ports:** Each port supports full RS232 signaling (TXD, RXD, RTS, CTS, DTR, DSR, DCD, GND). - **16550A UART Compatibility:** Each port includes a 16550A-compatible UART with 16-byte FIFO for efficient data buffering and reduced CPU overhead. - **Plug & Play Configuration:** Automatic IRQ and I/O address mapping assigned by the PCI BIOS, simplifying installation and configuration. - **5V Power Supply Operation:** Designed to operate using only the 5V power rail from the PCI slot, ensuring stable and efficient power delivery to all serial ports. - **Surge Protection:** Integrated surge protection on TXD and RXD signal lines enhances reliability in electrically noisy environments. - **Flexible Connector Options:** Includes a DB37 female to 4×DB9 male breakout cable (DB25 male version available upon request). - **Wide OS Compatibility:** Supports multiple operating systems including DOS, Windows 95/98/ME/NT/2000/XP/Vista/7, Linux, SCO OpenServer, and UNIX variants. - **Compact Design:** Small form factor (120 mm × 100 mm) suitable for standard PCI slots in desktop or industrial PCs. - **Industrial-Grade Reliability:** Designed for continuous operation in environments with temperature ranges from 0°C to 55°C and humidity up to 95% RH.

Manufacturer: Rayon

Category: RS232 4-Ports

- **Four Independent RS232 Ports:** Each port supports asynchronous serial communication with full modem control signals. - **16550A-Compatible UARTs:** Each channel includes a 16-byte transmit and receive FIFO buffer for efficient data handling and reduced CPU load. - **Plug & Play PCI Interface:** Fully compliant with PCI Local Bus Specification Rev. 2.1; automatic resource allocation (I/O address, IRQ) by BIOS. - **Shared IRQ Support:** Multiple PCI cards can share a single interrupt line, simplifying system integration. - **High-Speed Communication:** Supports baud rates up to 115.2 kbps (1.8432 MHz crystal) or up to 921.6 kbps (14.7456 MHz crystal). - **Flexible Flow Control:** Supports both hardware (RTS/CTS) and software (XON/XOFF) flow control. - **Comprehensive OS Support:** Compatible with legacy and modern operating systems, including Windows 2000/XP/7, Linux, DOS, and SCO. - **Expandable System Design:** Up to two P584 cards can be installed in a single system, providing up to eight serial ports. - **Universal PCI Compatibility:** Operates in both 5 V and 3.3 V PCI slots (universal version P584U). - **Optional Isolation and Conversion:** Compatible with the RS4232-4 isolation box for converting RS232 signals to isolated RS232/RS422/RS485 interfaces. - **Compact Form Factor:** Designed for standard PCI slots with a small footprint suitable for industrial and embedded applications.

Manufacturer: Rayon

Category: RS232 4-Ports

- **Four Independent RS232 Ports:** Each port is fully 16550A UART compatible, supporting standard RS232 signals (TXD, RXD, RTS, CTS, DTR, DSR, DCD, GND). - **Universal PCI Interface:** Compatible with both 3.3V and 5V 33MHz PCI slots, ensuring broad motherboard compatibility. - **Plug & Play Configuration:** Automatic IRQ and I/O address mapping assigned by PCI BIOS; no manual configuration required. - **High-Speed Serial Communication:** Supports baud rates from 50 to 115,200 bps per port. - **Surge Protection:** Integrated surge protection on TXD/RXD lines for enhanced reliability in industrial environments. - **16550A-Compatible UARTs:** Each port includes a 16-byte FIFO buffer for efficient data handling and reduced CPU load. - **Broad OS Support:** Compatible with DOS, Windows 95/98/ME/NT/2000/XP/7/8/10, Linux, and SCO OpenServer. - **Multi-Card Support:** Up to two P584U cards can be installed per system, providing up to eight serial ports. - **Flexible Connector Options:** Standard A404 cable (DB37F to 4×DB9M) included; optional A400 cable (DB37F to 4×DB25M) available. - **Industrial-Grade Design:** Built with high-quality components and designed for continuous operation in demanding environments.

Manufacturer: Rayon

Category: RS232 4-Ports

- **Four Independent RS232 Ports:** Each port is fully 16550A UART compatible, providing reliable asynchronous serial communication. - **High Compatibility:** Supports 3.3V and 5V PCI bus systems, ensuring broad compatibility with modern and legacy PCs. - **Plug & Play Configuration:** Automatic IRQ and I/O address mapping assigned by PCI BIOS, eliminating manual configuration. - **Surge Protection:** Integrated surge protection on TXD and RXD lines enhances reliability in industrial environments. - **Flexible Power Supply:** Operates using only the 5V power rail from the PCI slot—no external power required. - **Multi-OS Support:** Compatible with DOS, Windows 95/98/ME/NT/2000/XP/7/8/10, Linux, SCO OpenServer, and UNIX systems. - **16550A-Compatible UARTs:** Each port includes a 16-byte FIFO buffer for efficient data handling and reduced CPU load. - **High-Speed Data Transmission:** Supports baud rates from 50 to 115,200 bps per port. - **Shared IRQ Capability:** Allows multiple cards to share a single IRQ, supporting up to two cards per system. - **Compact Design:** Small form factor (122 × 101 mm) suitable for standard PCI slots. - **Included Cable Assembly:** DB37 female to 4 × DB9 male breakout cable (A404); optional DB25 male cable (A400) available. - **Industrial-Grade Reliability:** Designed for continuous operation in environments with wide temperature and humidity ranges.

Manufacturer: Rayon

Category: RS232 4-Ports

- **Four Independent RS232 Ports:** Provides four fully functional RS232 serial ports via a single PCI slot. - **5V Power on Pin 9:** Each port supplies 5V DC on the RI (Ring Indicator) pin, enabling direct powering of external serial devices such as barcode scanners, readers, or handheld terminals. - **Intelligent PCI Interface:** Utilizes an intelligent 16550A-compatible serial communication controller with 16-byte FIFO buffers for efficient data handling and reduced CPU load. - **Plug & Play Configuration:** Automatic IRQ and I/O address assignment by PCI BIOS; no manual configuration required. - **16550A UART Compatibility:** Ensures compatibility with standard serial communication software and operating systems. - **Surge Protection:** Built-in surge protection on TXD and RXD signal lines enhances reliability in industrial environments. - **Universal PCI Bus Support:** Compatible with both 3.3V and 5V PCI slots operating at 33 MHz. - **High-Speed Communication:** Supports baud rates from 50 bps up to 115,200 bps per port. - **Multi-OS Support:** Compatible with DOS, Windows 95/98/ME/NT/2000/XP/7/8/10, Linux, UNIX, and SCO OpenServer. - **Compact Design:** Small form factor (120 mm × 100 mm) suitable for standard desktop and industrial PCs. - **Shared IRQ Capability:** Supports IRQ sharing among multiple PCI cards, optimizing system resource usage. - **External Cable Options:** Includes DB37 female to 4×DB9 male cable (DB25 male optional).

Manufacturer: Rayon

Category: RS232 4-Ports

- **Four Independent RS232 Ports:** Each port is 16550A-compatible, supporting buffered transmit and receive channels with 16-byte FIFOs. - **High-Speed Communication:** Software-programmable baud rates up to 115.2 Kbps (1.8432 MHz crystal) or up to 921.6 Kbps (14.7456 MHz crystal). - **Plug & Play PCI Interface:** Fully compliant with PCI Local Bus Specification Rev. 2.1. Automatic resource assignment (I/O address, IRQ) by PCI BIOS. - **Shared Interrupt Support:** One sharable IRQ mapping for all ports, reducing system resource usage. - **Flexible I/O Mapping:** 6 × 8-byte I/O address blocks assigned by PCI BIOS. - **Universal PCI Compatibility:** Operates in both 5V and 3.3V PCI slots (universal card design). - **Comprehensive OS Support:** Drivers available for DOS, Windows 95/98/ME/NT/2000/XP, Linux, and SCO OpenServer. - **Expansion Connectivity:** Includes a DB37 female connector on the card, with an expansion cable (DB37F to 4×DB9M or optional 4×DB25M). - **Multi-Card Support:** Up to two P984 cards can be installed per system, providing up to eight serial ports. - **Flow Control Options:** Supports both hardware (RTS/CTS) and software (Xon/Xoff) flow control. - **Compact Design:** Optimized for industrial and embedded PC applications requiring multiple serial interfaces.

Manufacturer: Rayon

Category: RS232 4-Ports

- **PCI Express x1 Compliant:** Fully compatible with PCI Express x1 interface, ensuring high‑speed data transfer and broad system compatibility. - **Four Independent RS‑232 Ports:** Provides four serial communication channels via a single DB44 female connector, expandable through a breakout cable. - **Wide Baud Rate Range:** Supports baud rates from **150 bps to 921.6 Kbps**, suitable for a wide range of serial devices. - **128‑Byte FIFO Buffer:** Each port includes a 128‑byte FIFO buffer for efficient data handling and reduced CPU load. - **Hardware and Software Flow Control:** Supports RTS/CTS (hardware) and Xon/Xoff (software) flow control for reliable data transmission. - **Full Modem Control Signals:** Includes TxD, RxD, RTS, CTS, DTR, DSR, DCD, and GND signals for full RS‑232 compliance. - **Low‑Profile Design:** Compact 67.2 × 104.8 mm form factor suitable for small‑form‑factor PCs and embedded systems. - **Industrial Temperature Range:** Operates reliably from **‑40°C to +75°C**, with storage capability up to +85°C. - **High ESD Protection:** Meets IEC 61000‑4‑2 standards with **15 kV air discharge** and **8 kV contact discharge** protection. - **LED Indicators:** Each port features dual LEDs—green for transmit (TX) and amber for receive (RX)—for real‑time communication status monitoring. - **Low Power Consumption:** Operates at **835 mA @ 3.3 VDC**, requiring only the PCIe slot power supply. - **Rugged Industrial Design:** Built for long‑term reliability in harsh environments, with 5‑year warranty coverage.

Manufacturer: JS Automation

Category: RS232 4-Ports

- **PCI Express x1 Interface:** Fully compliant with PCI Express x1 specification, ensuring compatibility with modern PC and industrial computer platforms. - **Four Isolated RS‑232 Ports:** Provides four independent RS‑232 serial channels through a single DB44 connector, each isolated to 3 kV for enhanced protection against ground loops and electrical surges. - **High Baud Rate Support:** Configurable baud rates from 150 bps up to 921.6 Kbps, suitable for a wide range of serial communication devices. - **128‑Byte FIFO Buffer:** Each port includes a 128‑byte FIFO for efficient data handling and reduced CPU overhead during high‑speed communication. - **Hardware and Software Flow Control:** Supports RTS/CTS (hardware) and Xon/Xoff (software) flow control for reliable data transmission. - **Low‑Profile Form Factor:** Compact 67.2 × 136.8 mm design fits small‑form‑factor PCs and embedded systems. - **3 kV Isolation Protection:** Electrical isolation between ports and host system enhances safety and prevents damage from transient voltages. - **LED Indicators:** Individual TX (green) and RX (amber) LEDs per port provide real‑time transmission and reception status. - **Wide Temperature Range:** Operates reliably from ‑40 °C to +75 °C, suitable for harsh industrial environments. - **High ESD Immunity:** Meets IEC 61000‑4‑2 standards with 15 kV air and 8 kV contact discharge protection. - **Energy Efficient:** Operates on 3.3 V DC with a typical current draw of 1,150 mA. - **Long‑Term Reliability:** Backed by a 5‑year manufacturer warranty.

Manufacturer: JS Automation

Category: RS232 4-Ports