- **Four Isolated Serial Ports:** Each port can be independently configured for RS422 or RS485 operation, providing electrical isolation for industrial environments. - **Auto-Data-Direction-Control (ADDC):** Built-in automatic data direction control for RS485 communication eliminates the need for software-based RTS signal management. - **High Compatibility:** Fully compatible with 16550A UART standard, ensuring broad software and hardware interoperability. - **Plug & Play PCI Interface:** Automatic IRQ and I/O address assignment by PCI BIOS; no manual configuration required. - **Multi-OS Support:** Compatible with DOS, Windows 95/98/ME/NT/2000/XP/2003/Vista, Linux, SCO OpenServer, and UNIX systems. - **Industrial-Grade Design:** Designed for industrial control, automation, and data acquisition systems requiring robust and isolated serial communication. - **Flexible Baud Rate Configuration:** Supports baud rates from 50 bps to 115,200 bps per port. - **Shared IRQ Capability:** Supports IRQ sharing among multiple PCI cards, allowing up to two UP485I cards per system. - **Comprehensive Accessory Support:** Includes DB37-to-DB9 cable (A404) and supports optional terminal block adapters (TB485) and RS4232 isolation boxes.

Manufacturer: Rayon

Category: RS485 / RS422 4-Po

- **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

- **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

- **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 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:** 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

- **Universal PCI Interface:** Supports both **3.3V and 5V PCI slots**, ensuring compatibility with a wide range of motherboards and industrial PCs. - **Four Independent Serial Ports:** Each port can be individually configured as **RS232**, **RS422**, or **RS485**, providing maximum flexibility for mixed communication environments. - **Intelligent Plug & Play Configuration:** Fully compliant with PCI Plug & Play standards. The system automatically assigns **IRQ** and **I/O mapping** through the PCI BIOS, simplifying installation and configuration. - **High-Speed Communication:** Each port supports baud rates from **50 bps to 115,200 bps**, suitable for a wide range of serial devices and applications. - **16550A-Compatible UARTs:** Each port uses a **16550A-compatible UART** with integrated FIFO buffers, ensuring stable data transmission and reduced CPU overhead. - **Auto Data Direction Control (RS485):** Built-in automatic data direction control for RS485 mode eliminates the need for manual RTS signal handling, improving communication efficiency in half-duplex networks. - **Flexible Power Design:** Operates using **5V power supply only**, simplifying system integration and ensuring stable operation across all supported serial modes. - **Broad Operating System Support:** Compatible with **DOS**, **Windows 95/98/Me**, **Windows NT**, **Windows 2000/XP**, **Windows Vista/7 (32-bit)**, **Linux**, and **SCO OpenServer**. - **Compact Form Factor:** Small PCB footprint (120 mm × 100 mm) suitable for space-constrained industrial systems. - **Industrial-Grade Reliability:** Designed for continuous operation in environments with wide temperature and humidity ranges.

Manufacturer: Rayon

Category: RS232 Mixed RS485 / RS422 4-Ports PCI

- **Multi-Protocol Serial Support:** Each of the four ports can be independently configured as RS232, RS422, or RS485, providing maximum flexibility for mixed communication environments. - **5V PCI Bus Compatibility:** Designed specifically for 5V PCI slots, ensuring stable operation in legacy and industrial PC systems. - **Intelligent Plug & Play Architecture:** Fully PCI Plug & Play compliant, with automatic I/O address and IRQ assignment handled by the PCI BIOS. - **High Compatibility:** Supports a wide range of operating systems including DOS, Windows 95/98/Me, Windows NT, Windows 2000/XP, Windows 7/8/10, Linux, and SCO OpenServer. - **Auto Data Direction Control (RS485):** Built-in automatic data direction control for RS485 communication eliminates the need for manual RTS signal handling, simplifying half-duplex communication. - **16550A UART Compatibility:** Each port uses a 16550A-compatible UART with 16-byte FIFO buffers, ensuring reliable high-speed data transmission and reduced CPU overhead. - **Flexible Connector Options:** Ships with a DB37 female to 4×DB9 male breakout cable (DB25 male version available upon request). - **Compact Design:** Small form factor (120 mm × 100 mm) suitable for standard desktop or industrial PC enclosures. - **Industrial-Grade Reliability:** Operates in wide environmental conditions (0°C–55°C, 10–95% RH) suitable for industrial and laboratory use. - **Shared IRQ Mapping:** Efficient resource utilization through a single shared IRQ for all four ports, minimizing system conflicts. - **Selectable Baud Rate:** Each port supports baud rates from 50 to 115,200 bps, covering most serial communication requirements. - **Extended Product Line:** Part of Rayon’s 5V-only PCI serial card family, offering 4-port and 8-port variants for different application scales.

Manufacturer: Rayon

Category: RS232 Mixed RS485 / RS422 4-Ports PCI

- **Four Independent Serial Ports:** Each port can be configured individually for RS422 or RS485 operation via DIP switches. - **Universal PCI Compatibility:** Supports both 3.3V and 5V PCI slots, ensuring compatibility with a wide range of modern and legacy systems. - **High Performance UARTs:** Each port uses a 16550A-compatible UART with 16-byte transmit and receive FIFOs, reducing CPU overhead and improving throughput. - **Automatic Data Direction Control (ADDC):** Built-in ADDC circuitry for RS485 mode automatically manages data direction, eliminating the need for software RTS control. - **Plug & Play Configuration:** IRQ and I/O address mapping are automatically assigned by the PCI BIOS. The card supports IRQ sharing across multiple PCI devices. - **Flexible Baud Rate Support:** Software-programmable baud rates from 50 to 115,200 bps (standard 1.8432 MHz crystal) or up to 921,600 bps (optional 14.7456 MHz crystal). - **Multi-OS Driver Support:** Compatible with DOS, Windows 95/98/ME/NT/2000/XP, Linux, and SCO OpenServer. - **Compact Form Factor:** PCB dimensions of 122 mm × 101 mm, suitable for standard PCI slots. - **Industrial-Grade Design:** Designed for robust operation in industrial environments, with optional termination resistors and isolated ground per port. - **Included Cable Assembly:** Ships with A404 cable (DB37 female to 4 × DB9 male connectors). Optional A400 cable (DB37 to 4 × DB25 male) available on request.

Manufacturer: Rayon

Category: RS485 / RS422 4-Po

- **Four Independent Serial Ports:** Each port can be configured individually for RS422 or RS485 operation. - **Auto Data Direction Control (ADDC):** Automatic control of data direction in RS485 mode eliminates the need for manual RTS signal handling. - **High Compatibility:** Fully compatible with 16550A UART standard, ensuring broad software and hardware support. - **Plug & Play PCI Interface:** Automatic IRQ and I/O address assignment by PCI BIOS; no manual configuration required. - **Flexible Power Support:** Operates on standard 5V PCI bus power; compatible with both 3.3V and 5V PCI slots. - **High-Speed Communication:** Supports baud rates from 50 to 115,200 bps per port. - **Multi-OS Support:** Compatible with DOS, Windows 95/98/Me/NT/2000/XP/7/8/10, Linux, and SCO OpenServer. - **Compact Design:** Small form factor (122 × 101 mm) suitable for standard PC enclosures. - **Expandable System:** Supports installation of up to two cards per system (total of 8 serial ports). - **Comprehensive Accessory Set:** Includes DB37-to-4×DB9 cable (A404); optional DB37-to-4×DB25 cable (A400) available. - **Industrial Reliability:** Designed for continuous operation in industrial and automation environments.

Manufacturer: Rayon

Category: RS485 / RS422 4-Po

- **Universal PCI Compatibility:** Supports both 3.3V and 5V PCI slots, ensuring broad compatibility with a wide range of motherboards and industrial PCs. - **4-Port RS422/RS485 Interface:** Provides four independent serial communication ports for industrial control, automation, and data acquisition systems. - **16550A-Compatible UARTs:** Each port includes a 16550A-compatible UART with 16-byte FIFO buffers, ensuring stable and efficient data transmission. - **High-Speed Communication:** Supports baud rates from 50 bps up to 115,200 bps per port, suitable for high-performance serial communication tasks. - **Plug & Play Configuration:** Automatic IRQ and I/O address assignment via PCI BIOS simplifies installation and configuration. - **Surge Protection:** Integrated surge protection on TXD and RXD signal lines enhances reliability in electrically noisy environments. - **5V Power Supply Operation:** Designed for systems that provide only 5V power, ensuring compatibility with legacy industrial platforms. - **Flexible Connector Options:** Includes a DB37 female to 4×DB9 male cable (DB25 male cable available upon request). - **Cross-Platform Driver Support:** Compatible with multiple operating systems including DOS, Windows (95/98/Me/NT/2000/XP/Vista/7), Linux, SCO, and UNIX. - **Compact Design:** Small form factor (120 mm × 100 mm) suitable for space-constrained enclosures. - **Industrial-Grade Build:** Designed for continuous operation in demanding environments with wide temperature and humidity tolerance.

Manufacturer: Rayon

Category: RS232 Mixed RS485 / RS422 4-Ports PCI

- **High-Density Serial Expansion:** Supports **48 RS232 serial ports** via three NF116 connector boxes, each providing 16 ports. - **Universal PCI Compatibility:** Operates in both **5V and 3.3V PCI 33MHz bus slots**, ensuring compatibility with legacy and modern systems. - **Single IRQ Resource Allocation:** Utilizes **one IRQ** for all 48 ports, minimizing system resource consumption. - **Intelligent Architecture:** Based on the **P640NU intelligent multi-port card**, providing efficient data handling and reduced CPU load. - **Flexible Memory Mapping:** Supports both **memory-mapped** and **I/O-mapped** configurations for optimized performance under different OS environments. - **Comprehensive OS Support:** Compatible with **DOS, Windows 95/98/Me, Windows NT/2000/XP/Vista/7, Linux, and SCO OpenServer**. - **Industrial-Grade Design:** Engineered for continuous operation in industrial environments with wide temperature and humidity tolerance. - **Modular Expansion:** Daisy-chain capable connector boxes allow scalable port expansion and simplified cabling. - **Hardware Flow Control:** Supports both **RTS/CTS hardware** and **XON/XOFF software** handshaking. - **High-Speed Communication:** Each port configurable from **110 to 115,200 bps**, with UNIX-compatible baud rate mapping. - **Compact Form Factor:** PCI card dimension of **5.0 × 3.4 inches**, suitable for standard PC enclosures. - **Upgradeable Platform:** Compatible with Rayon’s **PCIIOP intelligent series**, allowing future upgrades to local-processor-based cards (e.g., P990F, IOP3927F).

Manufacturer: Rayon

Category: PCI max 128 Serial

- **High Port Density:** Supports 48 independent serial ports in a single PCI slot. - **Multi-Protocol Support:** Each port can be configured individually for RS232, RS422, or RS485 operation via DIP switches. - **Universal PCI Compatibility:** Operates in both 3.3V and 5V PCI 33MHz bus slots, ensuring compatibility with modern and legacy systems. - **Single IRQ Utilization:** All 48 ports share one IRQ assigned automatically by the PCI BIOS, minimizing system resource usage. - **Intelligent Architecture:** Based on the P640NU intelligent multi-port controller, providing efficient data handling and reduced CPU load. - **Flexible System Integration:** Modular design with external NF316 connector boxes (three units per system) connected via A640 cable. - **Comprehensive OS Support:** Drivers available for DOS, Windows 95/98/Me/NT/2000/XP/Vista/7, Linux, and SCO OpenServer. - **Industrial Reliability:** Designed for continuous operation in industrial environments with wide temperature and humidity tolerance. - **Upgradeable Platform:** Compatible with RAYON’s PCIIOP intelligent series cards (e.g., P990F, IOP3927F) for enhanced processing power. - **Standardized Connectors:** Uses DB9 male connectors for all ports, simplifying cabling and integration. - **Flow Control Options:** Supports both hardware (RTS/CTS) and software (XON/XOFF) flow control mechanisms. - **Baud Rate Flexibility:** Configurable per port from 110 to 115,200 bps, with UNIX compatibility mappings for 50–115,200 bps.

Manufacturer: Rayon

Category: PCI max 128 Serial

- **High Port Density:** Supports 48 independent RS422/RS485 serial ports via three external connector boxes (NF216). - **Universal PCI Compatibility:** Operates in both 5V and 3.3V PCI 33MHz bus slots, ensuring compatibility with legacy and modern systems. - **Single IRQ Resource:** Utilizes only one IRQ for all 48 ports, minimizing system resource usage. - **Flexible Interface Configuration:** Each port can be independently configured as RS422 or RS485 using DIP switches. - **Wide Software Support:** Compatible with DOS, Windows 95/98/Me, Windows NT/2000/XP/Vista/7, Linux, and SCO OpenServer. - **Intelligent Architecture:** Based on the P640NU intelligent multi-port card platform, providing efficient data handling and reduced CPU load. - **High-Speed Communication:** Each port supports baud rates from 110 to 115,200 bps, with UNIX compatibility mappings for 57,600, 76,800, and 115,200 bps. - **Flow Control Options:** Supports both software (XON/XOFF) and hardware (RTS/CTS) flow control. - **Industrial Reliability:** Designed for continuous operation in industrial environments with wide temperature and humidity tolerance. - **Upgradeable Platform:** Compatible with Rayon’s intelligent PCIIOP series cards (e.g., P990F with Intel 80960JF processor, IOP3927F with 133MHz MIPS processor) using the same connector boxes.

Manufacturer: Rayon

Category: PCI max 128 Serial

- **High Port Density:** Supports 64 independent RS232 serial ports through four NF116 connector boxes. - **Universal PCI Compatibility:** Operates in both 5V and 3.3V PCI 33MHz bus slots, ensuring compatibility with legacy and modern systems. - **Single IRQ Resource:** Utilizes only one IRQ for all 64 ports, minimizing system resource consumption. - **Intelligent Multi-Port Architecture:** Based on the P640NU intelligent multi-port card, enabling efficient data handling and reduced CPU load. - **Broad OS Support:** Compatible with DOS, Windows 95/98/Me, Windows NT/2000/XP/Vista/7, Linux, and SCO OpenServer. - **Flexible System Integration:** Modular design allows daisy-chaining of connector boxes for scalable port expansion. - **Industrial-Grade Design:** Engineered for continuous operation in industrial environments with wide temperature and humidity tolerance. - **Flow Control Options:** Supports both software (XON/XOFF) and hardware (RTS/CTS) handshaking. - **High-Speed Communication:** Each port configurable from 110 to 115,200 bps, with UNIX-compatible baud rate mapping. - **Upgradeable Platform:** Compatible with Rayon’s intelligent PCIIOP series cards (e.g., P990F, IOP3927F) for enhanced processing capability.

Manufacturer: Rayon

Category: PCI max 128 Serial

- **High Port Density:** Supports up to **64 independent serial ports** in a single PCI slot. - **Multi-Protocol Support:** Each port can be configured individually for **RS232, RS422, or RS485** operation via DIP switches. - **Universal PCI Compatibility:** Operates in both **3.3V and 5V PCI 33MHz** bus environments. - **Single IRQ Resource:** All 64 ports share a single IRQ assigned by the PCI BIOS, optimizing system resource allocation. - **Intelligent Architecture:** Based on the **P640NU intelligent multi-port controller card**, providing efficient data handling and reduced CPU load. - **Flexible Expansion:** Utilizes **four NF316 connector boxes**, each providing 16 ports, daisy-chained via the **A640 cable**. - **Comprehensive OS Support:** Compatible with **DOS, Windows 95/98/Me/NT/2000/XP/Vista/7**, **Linux**, and **SCO OpenServer**. - **High-Speed Communication:** Supports baud rates from **110 to 115,200 bps**, with UNIX-compatible mappings for 57,600, 76,800, and 115,200 bps. - **Flow Control Options:** Supports both **XON/XOFF software** and **RTS/CTS hardware** handshaking. - **Industrial Reliability:** Designed for continuous operation in environments from **5°C to 40°C**, with humidity tolerance up to **90% RH**. - **Upgradeable Platform:** Compatible with **PCIIOP intelligent series** cards such as **P990F (Intel 80960JF)** and **IOP3927F (133MHz MIPS)** for enhanced processing power.

Manufacturer: Rayon

Category: PCI max 128 Serial

- **Embedded RISC Processor:** Equipped with a 133 MHz TMPR3927 RISC CPU capable of one instruction per cycle, delivering approximately 3927 MIPS of processing power. - **Large Local Memory:** Integrated 16 MB SDRAM dual-port memory accessible by both the local processor and host system. Each serial port can utilize up to 1 MB receive buffer and 512 KB transmit buffer. - **Universal PCI Compatibility:** Supports both 3.3 V and 5 V PCI bus standards at 33 MHz, ensuring compatibility with modern 64‑bit PCI slots. - **High-Speed Serial Communication:** Supports baud rates from 110 bps up to 230,400 bps (230 kBd). Software compatibility mapping allows legacy applications to use standard baud rate identifiers. - **Eight-Port RS‑232 Interface:** Provides eight independent serial channels via a DB‑62 connector and breakout cable (DB‑9 or DB‑25). Each port supports full modem control and hardware/software flow control. - **Flexible Interface Options:** Supports RS‑232, RS‑422, and RS‑485 modes through optional converter boxes (e.g., RS4232‑8 for ground-isolated RS‑422/485). - **Ground Isolation Capability:** When used with RS4232‑8 or IF‑series boxes, provides galvanic isolation for industrial environments to prevent ground loops and signal interference. - **Operating System Support:** Fully supported under Windows NT, 2000, XP, Vista, Windows 7, Linux (kernel 2.2–2.6+), and SCO UNIX/OpenServer. - **High Expandability:** Up to two cards per system, supporting a total of 128 serial ports/users. - **Compact Form Factor:** Dimensions 159 mm (L) × 109 mm (H), designed for standard PCI slots.

Manufacturer: Rayon

Category: RS232 8-Port

- **Eight-Port Intelligent Serial Controller:** Provides eight independent serial communication ports—four RS232 and four RS422/RS485—on a single PCI expansion card. - **Universal PCI Interface:** Supports both 3.3V and 5V 33MHz PCI slots, ensuring compatibility with a wide range of PC/AT systems. - **High-Speed Communication:** Each port supports baud rates from 50 bps up to 115,200 bps (1.8432 MHz crystal) or up to 921,600 bps (14.7456 MHz crystal). - **ADDC (Auto Data Direction Control):** Enables automatic control of data direction in RS485 mode, eliminating the need for manual RTS signal management. - **16550A UART Compatibility:** Each port is fully compatible with the industry-standard 16550A UART, providing 16-byte transmit and receive FIFOs for efficient data buffering. - **Plug & Play Configuration:** Fully compliant with PCI Plug & Play specifications; I/O addresses and IRQs are automatically assigned by the PCI BIOS. - **IRQ Sharing Capability:** Supports shared interrupt (IRQ) mapping, allowing multiple PCI cards to share a single IRQ line. - **Flexible Interface Configuration:** DIP switch selectable RS422 or RS485 modes for ports E–H; RS232 fixed on ports A–D. - **Comprehensive OS Support:** Compatible with DOS, Windows 95/98/ME/NT/2000/XP, Linux, and SCO OpenServer. - **Compact Design:** PCB dimensions of 140 mm × 107 mm for easy integration into standard PC enclosures. - **High Reliability:** Designed for industrial and commercial communication applications requiring stable multi-port serial connectivity.

Manufacturer: Rayon

Category: RS232 Mixed RS485 / RS422 8-Port

- **Eight Independent Serial Ports:** Provides 8 asynchronous serial communication channels per card. - **Mixed Interface Configuration:** - Ports A–D: Fixed RS232 interface. - Ports E–H: Independently selectable RS232, RS422, or RS485 interfaces. - **Universal PCI Compatibility:** Supports both **5V and 3.3V PCI slots** (33 MHz), ensuring compatibility with legacy and modern systems. - **Intelligent Serial Controller:** Each port uses a **16550A-compatible UART** with 16-byte FIFO buffers, reducing CPU load and improving throughput. - **Auto-Data-Direction-Control (ADDC):** Built-in automatic data direction control for RS485 half-duplex communication eliminates the need for manual RTS signal handling. - **Plug & Play Resource Allocation:** IRQ and I/O address mapping are automatically assigned by the PCI BIOS, simplifying installation and avoiding conflicts. - **High-Speed Communication:** Supports baud rates from **50 bps to 115,200 bps** (standard) and up to **921.6 kbps** with optional higher-frequency crystal. - **Comprehensive OS Support:** Compatible with DOS, Windows 95/98/ME/NT/2000/XP/2003/Vista, Linux, and SCO OpenServer. - **Flexible Connector Options:** Ships with a **DB62 male to 8×DB9 male cable (R804)** or optional **DB62 to 8×DB25 male cable (R801)**. - **IRQ Sharing Capability:** Supports shared interrupt operation, allowing multiple PCI cards to coexist efficiently. - **Industrial-Grade Reliability:** Designed for continuous operation in environments from 0°C to 55°C with up to 95% relative humidity.

Manufacturer: Rayon

Category: 8-Port 5V Single Mixed

- **Eight Independent Serial Ports:** Four dedicated RS422 ports (A–D) and four selectable RS232/RS422/RS485 ports (E–H), each configurable independently. - **Universal PCI Compatibility:** Supports both 5V and 3.3V PCI slots (33 MHz), ensuring compatibility with legacy and modern systems. - **5V Power Supply Only:** Operates exclusively on a single 5V power rail, simplifying system integration and ensuring stable operation. - **High-Speed Communication:** Each port supports baud rates from 50 to 115,200 bps, with 16550A-compatible UARTs and 16-byte FIFO buffers for efficient data handling. - **Auto-Data-Direction-Control (ADDC):** Built-in automatic data direction control for RS485 communication eliminates the need for manual RTS signal management. - **Plug & Play Configuration:** IRQ and I/O address mapping are automatically assigned by the PCI BIOS, supporting shared IRQ operation. - **Multi-OS Driver Support:** Compatible with DOS, Windows 95/98/ME/NT/2000/XP/2003/Vista, Linux, SCO OpenServer, and UNIX systems. - **Flexible Connector Options:** Includes DB62M-to-8×DB9M cable (R804) or optional DB62M-to-8×DB25M cable (R801). Optional TB485 terminal block adapter available for RS485 wiring. - **Scalable System Integration:** Supports installation of up to two P5988U cards per system, providing up to 16 serial ports. - **Industrial-Grade Design:** Designed for continuous operation in demanding environments with wide temperature and humidity tolerance.

Manufacturer: Rayon

Category: 8-Port 5V Single Mixed

- **Eight Independent Serial Ports:** Four ports (A–D) support RS485 only; four ports (E–H) are independently selectable for RS232, RS422, or RS485 operation. - **Universal PCI Interface:** Compatible with both 5V and 3.3V PCI slots (33 MHz), ensuring broad motherboard compatibility. - **5V Power-Only Design:** Operates solely from the 5V PCI rail, simplifying power requirements and improving stability. - **Auto-Data-Direction-Control for RS485:** Built-in automatic data direction control eliminates the need for manual RTS signal management in half-duplex RS485 communication. - **Plug & Play Resource Assignment:** IRQ and I/O address mapping are automatically assigned by the PCI BIOS, supporting shared IRQ configurations. - **High-Speed Serial Communication:** Each port supports baud rates from 50 to 115,200 bps (standard) and up to 921.6 kbps with optional higher-frequency crystal. - **16550A-Compatible UARTs:** Each port uses a 16550A-compatible UART with 16-byte FIFO buffers for efficient data handling and reduced CPU load. - **Comprehensive OS Support:** Compatible with DOS, Windows 95/98/ME/NT/2000/XP/2003/Vista/7, Linux, SCO OpenServer, and UNIX systems. - **Flexible Connector Options:** Includes DB62M-to-8×DB9M cable (R804) or optional DB62M-to-8×DB25M cable (R801). - **Scalable System Integration:** Supports up to two P5888U cards per system, providing up to 16 serial ports. - **Industrial Reliability:** Designed for continuous operation in industrial environments with wide temperature and humidity tolerance.

Manufacturer: Rayon

Category: 8-Port 5V Single Mixed

- **Eight Independent Serial Ports:** Six ports (A–F) selectable between RS232 and RS422; two ports (G–H) selectable between RS232 and RS485. - **Flexible Interface Configuration:** Each port can be independently configured for the desired serial standard, enabling mixed-mode operation. - **Auto Data Direction Control:** Built-in automatic data direction control for RS485 communication eliminates the need for manual RTS signal handling. - **Universal PCI Compatibility:** Supports both 5V and 3.3V PCI slots (33 MHz), ensuring compatibility with a wide range of PC architectures. - **Plug & Play Resource Allocation:** IRQ and I/O address mapping automatically assigned by PCI BIOS; supports shared IRQ operation. - **High-Speed Communication:** Programmable baud rates from 50 bps up to 115,200 bps (standard 1.8432 MHz clock). - **16550A-Compatible UARTs:** Each port uses a 16550A-compatible UART with 16-byte FIFO buffers for efficient data handling. - **Comprehensive OS Support:** Compatible with DOS, Windows 95/98/Me/NT/2000/XP/2003/Vista, Linux, and SCO OpenServer. - **Industrial-Grade Design:** Operating temperature range 0°C–55°C; humidity tolerance up to 95% RH. - **Expandable System Integration:** Supports up to two cards per system, providing a total of 16 serial ports. - **Single 5V Power Supply:** Simplified power requirements—no external power needed for serial operation. - **Included Connection Cable:** DB62 male to 8×DB9 male cable (DB25 version available on request).

Manufacturer: Rayon

Category: 8-Port 5V Single Mixed

- **Eight Independent Serial Ports:** Seven ports configurable as RS232 or RS422, and one port configurable as RS232 or RS485. - **Universal PCI Interface:** Compatible with both 5V and 3.3V PCI slots (33 MHz), ensuring broad system compatibility. - **Automatic Resource Allocation:** IRQ and I/O mapping automatically assigned by PCI BIOS through Plug & Play functionality. - **Auto Data Direction Control:** Built-in automatic data direction control for RS485 communication, eliminating the need for manual RTS signal handling. - **High-Speed Communication:** Supports baud rates from 50 bps up to 115,200 bps per port (software programmable). - **16550A-Compatible UART:** Each port uses a 16550A-compatible UART with 16-byte FIFO buffers for efficient data handling. - **Flexible Connector Options:** Supports DB25 or DB9 male connectors via included expansion cable. - **Operating System Support:** Fully compatible with DOS, Windows 95/98/ME/NT/2000/XP/2003/Vista, Linux, and SCO OpenServer. - **Plug & Play Installation:** No manual configuration required; resources are automatically assigned by the PCI BIOS. - **Multi-Card Support:** Up to two P5788U cards can be installed per system, providing up to 16 serial ports. - **Industrial Reliability:** Designed for continuous operation in industrial environments with wide temperature and humidity tolerance.

Manufacturer: Rayon

Category: 8-Port 5V Single Mixed

- **Eight Independent RS232 Ports:** Each port supports standard RS232C signaling with full modem control lines (TXD, RXD, RTS, CTS, DTR, DSR, DCD, GND). - **16550A-Compatible UARTs:** Each channel includes a 16-byte FIFO buffer for efficient data handling and reduced CPU load. - **Universal PCI Interface:** Compatible with both 5V and 3.3V PCI bus slots (33 MHz), ensuring broad motherboard compatibility. - **Plug & Play Configuration:** Automatic IRQ and I/O address assignment by PCI BIOS; no manual configuration required. - **Single 5V Power Operation:** The card draws power directly from the PCI slot, simplifying installation and ensuring stable operation. - **High-Speed Communication:** Supports baud rates from 50 to 115,200 bps per port. - **Surge Protection:** Built-in surge protection on TXD and RXD lines enhances reliability in industrial environments. - **Flexible Connectivity:** Includes a DB62 female connector with an external breakout cable (DB62M to 8×DB9M or optional 8×DB25M). - **Multi-OS Support:** Compatible with DOS, Windows 95/98/ME/NT/2000/XP/2003/Vista, Linux, and SCO OpenServer. - **IRQ Sharing:** Supports shared interrupt operation for multi-card systems. - **Scalable System Integration:** Up to two P5588U cards can be installed per system, providing up to 16 serial ports. - **Compact Design:** Optimized PCB layout for efficient airflow and minimal footprint in standard PC enclosures.

Manufacturer: Rayon

Category: 8-Port 5V Single Mixed

- **Eight Independent Serial Ports:** Each port can be individually configured for RS232 or RS422 operation, supporting full-duplex communication. - **Universal PCI Interface:** Compatible with both 5V and 3.3V PCI slots (33 MHz), ensuring broad system compatibility. - **16550A-Compatible UARTs:** Each channel integrates a 16C550A-compatible UART with 16-byte transmit and receive FIFOs, minimizing CPU load and improving throughput. - **Automatic Plug & Play Configuration:** IRQ and I/O address mapping are automatically assigned by the PCI BIOS, eliminating manual configuration. - **Surge Protection:** Built-in surge protection on TXD/RXD lines enhances reliability in industrial environments. - **Flexible Power Design:** Operates on a single 5V power supply for both RS232 and RS422 modes. - **High-Speed Data Transmission:** Supports baud rates from 50 bps up to 115,200 bps (standard crystal 1.8432 MHz). - **Multi-OS Support:** Compatible with DOS, Windows 95/98/ME/NT/2000/XP/2003/Vista, Linux, SCO OpenServer, and UNIX systems. - **Expandable System Integration:** Supports up to two P5188U cards per system, providing up to 16 serial ports. - **Comprehensive Driver Support:** Includes drivers and installation utilities for all major operating systems, with detailed configuration options for multi-card setups. - **Industrial-Grade Reliability:** Designed for continuous operation in demanding environments with wide temperature and humidity tolerance.

Manufacturer: Rayon

Category: 8-Port 5V Single Mixed