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- Four Independent RS-232 Ports: Provides four fully functional RS-232 serial channels through a single PCMCIA Type II interface, allowing simultaneous communication with multiple serial devices.
- High-Performance UART: Each port is equipped with a 16-byte FIFO UART (16550C), ensuring efficient data buffering and minimizing CPU load during high-speed data transfers.
- Compact PCMCIA Type II Form Factor: Designed for laptops and compact embedded systems, the card fits standard PCMCIA Type II slots, offering plug-and-play convenience.
- Standard DB9 Male Connectors: Each RS-232 port terminates in a standard DB9 male connector, ensuring compatibility with a wide range of serial devices such as modems, sensors, PLCs, and instrumentation equipment.
- Reliable Industrial Design: Built with Moxa’s proven serial communication technology, ensuring stable operation in demanding environments.
- Driver Support: Compatible with major operating systems supporting PCMCIA serial interfaces, including Windows and Linux distributions.
- Hot-Swappable Interface: Supports PCMCIA hot insertion and removal, allowing flexible deployment in mobile and field applications.
- Low Power Consumption: Optimized for portable systems, minimizing power draw from the host device.
- Extended Communication Range: Supports standard RS-232 signaling for communication distances up to 15 meters (depending on cable quality and baud rate).
- High-Performance UART: Each port is equipped with a 16-byte FIFO UART (16550C), ensuring efficient data buffering and minimizing CPU load during high-speed data transfers.
- Compact PCMCIA Type II Form Factor: Designed for laptops and compact embedded systems, the card fits standard PCMCIA Type II slots, offering plug-and-play convenience.
- Standard DB9 Male Connectors: Each RS-232 port terminates in a standard DB9 male connector, ensuring compatibility with a wide range of serial devices such as modems, sensors, PLCs, and instrumentation equipment.
- Reliable Industrial Design: Built with Moxa’s proven serial communication technology, ensuring stable operation in demanding environments.
- Driver Support: Compatible with major operating systems supporting PCMCIA serial interfaces, including Windows and Linux distributions.
- Hot-Swappable Interface: Supports PCMCIA hot insertion and removal, allowing flexible deployment in mobile and field applications.
- Low Power Consumption: Optimized for portable systems, minimizing power draw from the host device.
- Extended Communication Range: Supports standard RS-232 signaling for communication distances up to 15 meters (depending on cable quality and baud rate).
1. Product Overview
Product Name: COMpad-32B-4
Model: COMpad-32B-4
Series: COMpad Series – Multi-Port Serial Communication Adapters
Article Number: COMpad-32B-4
Manufacturer: Moxa Technologies Co., Ltd.
The Moxa COMpad-32B-4 is a PCMCIA Type II serial interface card designed to provide four independent RS-232 serial communication ports through a single compact PCMCIA slot. Engineered for industrial, embedded, and mobile computing environments, this adapter enables reliable multi-port serial connectivity for laptops, industrial PCs, and portable systems that require multiple serial interfaces without sacrificing mobility or performance.
2. Key Features
- Four Independent RS-232 Ports: Provides four fully functional RS-232 serial channels through a single PCMCIA Type II interface, allowing simultaneous communication with multiple serial devices.
- High-Performance UART: Each port is equipped with a 16-byte FIFO UART (16550C), ensuring efficient data buffering and minimizing CPU load during high-speed data transfers.
- Compact PCMCIA Type II Form Factor: Designed for laptops and compact embedded systems, the card fits standard PCMCIA Type II slots, offering plug-and-play convenience.
- Standard DB9 Male Connectors: Each RS-232 port terminates in a standard DB9 male connector, ensuring compatibility with a wide range of serial devices such as modems, sensors, PLCs, and instrumentation equipment.
- Reliable Industrial Design: Built with Moxa’s proven serial communication technology, ensuring stable operation in demanding environments.
- Driver Support: Compatible with major operating systems supporting PCMCIA serial interfaces, including Windows and Linux distributions.
- Hot-Swappable Interface: Supports PCMCIA hot insertion and removal, allowing flexible deployment in mobile and field applications.
- Low Power Consumption: Optimized for portable systems, minimizing power draw from the host device.
- Extended Communication Range: Supports standard RS-232 signaling for communication distances up to 15 meters (depending on cable quality and baud rate).
3. Technical Specifications
General Specifications:
- Product Type: PCMCIA Type II Serial Interface Card
- Interface Standard: PCMCIA 2.1 / JEIDA 4.2 compliant
- Bus Interface: 16-bit PCMCIA Type II
Serial Communication:
- Number of Ports: 4 independent RS-232 ports
- Connector Type: DB9 male (x4)
- UART Type: 16550C compatible with 16-byte FIFO per port
- Baud Rate: Up to 115.2 kbps (typical RS-232 maximum)
- Data Bits: 5, 6, 7, 8
- Stop Bits: 1, 1.5, 2
- Parity: None, Even, Odd, Mark, Space
- Flow Control: RTS/CTS, XON/XOFF
- Signal Lines: TxD, RxD, RTS, CTS, DTR, DSR, DCD, RI, GND
Electrical Characteristics:
- Interface Voltage Levels: RS-232 standard ±5V to ±15V
- Power Supply: Supplied through PCMCIA interface (no external power required)
- Power Consumption: Typically < 500 mW
Physical Characteristics:
- Form Factor: PCMCIA Type II
- Dimensions (Card): Approx. 85.6 mm (L) × 54.0 mm (W) × 5.0 mm (H)
- Weight: Approx. 60–80 g (card only, excluding cable assembly)
- Material: Aluminum alloy housing with reinforced PCB substrate
- Cable Assembly: Multi-port breakout cable with four DB9 male connectors
Environmental Specifications:
- Operating Temperature: 0°C to 55°C (standard); extended temperature models available upon request
- Storage Temperature: -20°C to 85°C
- Humidity: 5% to 95% RH, non-condensing
- Shock & Vibration: Compliant with IEC 60068-2-6 and 60068-2-27 standards
4. Functionality
The COMpad-32B-4 functions as a multi-port serial expansion card for systems equipped with a PCMCIA slot. Once inserted, the card enumerates as four independent COM ports, each capable of full-duplex RS-232 communication. The integrated 16550C UARTs provide hardware buffering, reducing CPU overhead and ensuring smooth data flow even under high-speed or multi-threaded communication loads.
Use Cases and Applications:
- Industrial Automation: Connect multiple PLCs, sensors, or control modules to a single portable computer for configuration or monitoring.
- Field Service and Diagnostics: Ideal for technicians who need to interface with multiple serial devices in the field using a laptop.
- Point-of-Sale (POS) Systems: Supports multiple serial peripherals such as barcode scanners, receipt printers, and card readers.
- Laboratory and Test Equipment: Enables simultaneous data acquisition from multiple instruments.
- Networking and Communication: Connects to modems, serial consoles, and communication controllers for configuration and management.
Compatibility:
- Compatible with standard PCMCIA Type II slots on laptops, embedded PCs, and industrial computers.
- Supported by operating systems with PCMCIA and serial driver support, including Windows 98/2000/XP, Windows 7/10 (with legacy driver support), and Linux kernel versions supporting PCMCIA serial devices.
5. Components & Accessories
Included Items:
- COMpad-32B-4 PCMCIA Type II card
- Multi-port breakout cable with four DB9 male connectors
- Driver and utility software (on CD or downloadable package)
- Quick installation guide and documentation
Optional Accessories:
- Extended-length RS-232 cables (DB9 male-to-female)
- DB9-to-terminal block adapters for industrial wiring
- Protective carrying case for field use
- Replacement breakout cable assemblies
Connectors:
- PCMCIA 68-pin host interface connector (card edge)
- Breakout cable connector (high-density mini connector on card side)
- Four DB9 male connectors on breakout cable for RS-232 ports
6. Installation & Setup
Requirements:
- Host system with available PCMCIA Type II slot
- Supported operating system with PCMCIA and serial port driver support
- Administrative privileges for driver installation
Installation Steps:
1. Power off the host system (if required by OS).
2. Insert the COMpad-32B-4 card into the PCMCIA slot until it is firmly seated.
3. Connect the breakout cable to the card’s high-density connector.
4. Attach serial devices to the DB9 male connectors.
5. Power on the system; the operating system should detect the new hardware.
6. Install the provided drivers or use native serial drivers if supported.
7. Verify COM port assignments in the system device manager or terminal software.
Mounting Options:
- Direct insertion into PCMCIA slot (no external mounting required).
- Optional cable strain relief or clip for securing breakout cable in mobile environments.
Configuration:
- COM port numbers can be configured via driver settings.
- Baud rate, parity, and flow control parameters adjustable through standard serial communication software.
7. Performance & Capabilities
Data Throughput:
- Supports baud rates up to 115.2 kbps per port, suitable for most RS-232 applications.
- Hardware FIFO buffering (16 bytes) ensures stable data transmission with minimal data loss.
Capacity:
- Four independent serial channels operating concurrently.
- Each port can handle full-duplex communication with separate devices.
Efficiency:
- Low CPU utilization due to hardware buffering and efficient driver design.
- Minimal latency for command-response applications.
Limitations:
- RS-232 standard limits cable length to approximately 15 meters at 19.2 kbps (shorter at higher baud rates).
- Not suitable for RS-422/485 communication without external converters.
- Requires PCMCIA slot (not compatible with ExpressCard or USB without adapters).
Reliability:
- Proven Moxa serial technology ensures stable operation in industrial and mobile environments.
- Robust electrical design protects against transient voltage spikes and signal interference.
8. Standards & Compliance
Industry Standards:
- PCMCIA 2.1 / JEIDA 4.2 compliant
- RS-232 (EIA/TIA-232-F) compliant
- UART 16550C compatible
Certifications:
- CE (Electromagnetic Compatibility)
- FCC Part 15 Class B (Electromagnetic Interference)
- RoHS compliant (Restriction of Hazardous Substances)
- WEEE compliant (Waste Electrical and Electronic Equipment Directive)
Regulatory Compliance:
- Designed and manufactured in accordance with ISO 9001 quality management standards.
- Meets or exceeds industrial-grade reliability and safety requirements for serial communication devices.
9. Additional Information
Warranty:
- Standard 3-year limited hardware warranty from Moxa Technologies.
- Covers defects in materials and workmanship under normal use conditions.
Support:
- Comprehensive technical support via Moxa’s global support network.
- Online resources including driver downloads, firmware updates, and knowledge base articles.
- Email and phone support available during standard business hours.
Maintenance:
- No regular maintenance required beyond ensuring clean connector contacts.
- Firmware and driver updates available periodically to maintain compatibility with new operating systems.
Product Lifecycle & Updates:
- Long-term availability typical of Moxa industrial communication products.
- Backward compatibility with previous COMpad series models.
- Replacement and upgrade options available for legacy PCMCIA-based systems transitioning to newer interfaces.
Summary
The Moxa COMpad-32B-4 PCMCIA Type II Serial 4×RS-232 Interface is a compact, high-performance solution for expanding serial connectivity on portable and embedded systems. With four independent RS-232 ports, 16550C UARTs, and robust industrial-grade design, it delivers reliable multi-port communication in a single, space-efficient form factor. Ideal for engineers, technicians, and system integrators requiring multiple serial connections in mobile or field environments, the COMpad-32B-4 combines Moxa’s renowned reliability with ease of installation and broad compatibility.
Keywords: COMpad-32B-4, Moxa, PCMCIA Type II, 4-port RS-232, serial interface card, 16550C UART, DB9 male, multi-port serial adapter, industrial communication, laptop serial expansion.
Product Name: COMpad-32B-4
Model: COMpad-32B-4
Series: COMpad Series – Multi-Port Serial Communication Adapters
Article Number: COMpad-32B-4
Manufacturer: Moxa Technologies Co., Ltd.
The Moxa COMpad-32B-4 is a PCMCIA Type II serial interface card designed to provide four independent RS-232 serial communication ports through a single compact PCMCIA slot. Engineered for industrial, embedded, and mobile computing environments, this adapter enables reliable multi-port serial connectivity for laptops, industrial PCs, and portable systems that require multiple serial interfaces without sacrificing mobility or performance.
2. Key Features
- Four Independent RS-232 Ports: Provides four fully functional RS-232 serial channels through a single PCMCIA Type II interface, allowing simultaneous communication with multiple serial devices.
- High-Performance UART: Each port is equipped with a 16-byte FIFO UART (16550C), ensuring efficient data buffering and minimizing CPU load during high-speed data transfers.
- Compact PCMCIA Type II Form Factor: Designed for laptops and compact embedded systems, the card fits standard PCMCIA Type II slots, offering plug-and-play convenience.
- Standard DB9 Male Connectors: Each RS-232 port terminates in a standard DB9 male connector, ensuring compatibility with a wide range of serial devices such as modems, sensors, PLCs, and instrumentation equipment.
- Reliable Industrial Design: Built with Moxa’s proven serial communication technology, ensuring stable operation in demanding environments.
- Driver Support: Compatible with major operating systems supporting PCMCIA serial interfaces, including Windows and Linux distributions.
- Hot-Swappable Interface: Supports PCMCIA hot insertion and removal, allowing flexible deployment in mobile and field applications.
- Low Power Consumption: Optimized for portable systems, minimizing power draw from the host device.
- Extended Communication Range: Supports standard RS-232 signaling for communication distances up to 15 meters (depending on cable quality and baud rate).
3. Technical Specifications
General Specifications:
- Product Type: PCMCIA Type II Serial Interface Card
- Interface Standard: PCMCIA 2.1 / JEIDA 4.2 compliant
- Bus Interface: 16-bit PCMCIA Type II
Serial Communication:
- Number of Ports: 4 independent RS-232 ports
- Connector Type: DB9 male (x4)
- UART Type: 16550C compatible with 16-byte FIFO per port
- Baud Rate: Up to 115.2 kbps (typical RS-232 maximum)
- Data Bits: 5, 6, 7, 8
- Stop Bits: 1, 1.5, 2
- Parity: None, Even, Odd, Mark, Space
- Flow Control: RTS/CTS, XON/XOFF
- Signal Lines: TxD, RxD, RTS, CTS, DTR, DSR, DCD, RI, GND
Electrical Characteristics:
- Interface Voltage Levels: RS-232 standard ±5V to ±15V
- Power Supply: Supplied through PCMCIA interface (no external power required)
- Power Consumption: Typically < 500 mW
Physical Characteristics:
- Form Factor: PCMCIA Type II
- Dimensions (Card): Approx. 85.6 mm (L) × 54.0 mm (W) × 5.0 mm (H)
- Weight: Approx. 60–80 g (card only, excluding cable assembly)
- Material: Aluminum alloy housing with reinforced PCB substrate
- Cable Assembly: Multi-port breakout cable with four DB9 male connectors
Environmental Specifications:
- Operating Temperature: 0°C to 55°C (standard); extended temperature models available upon request
- Storage Temperature: -20°C to 85°C
- Humidity: 5% to 95% RH, non-condensing
- Shock & Vibration: Compliant with IEC 60068-2-6 and 60068-2-27 standards
4. Functionality
The COMpad-32B-4 functions as a multi-port serial expansion card for systems equipped with a PCMCIA slot. Once inserted, the card enumerates as four independent COM ports, each capable of full-duplex RS-232 communication. The integrated 16550C UARTs provide hardware buffering, reducing CPU overhead and ensuring smooth data flow even under high-speed or multi-threaded communication loads.
Use Cases and Applications:
- Industrial Automation: Connect multiple PLCs, sensors, or control modules to a single portable computer for configuration or monitoring.
- Field Service and Diagnostics: Ideal for technicians who need to interface with multiple serial devices in the field using a laptop.
- Point-of-Sale (POS) Systems: Supports multiple serial peripherals such as barcode scanners, receipt printers, and card readers.
- Laboratory and Test Equipment: Enables simultaneous data acquisition from multiple instruments.
- Networking and Communication: Connects to modems, serial consoles, and communication controllers for configuration and management.
Compatibility:
- Compatible with standard PCMCIA Type II slots on laptops, embedded PCs, and industrial computers.
- Supported by operating systems with PCMCIA and serial driver support, including Windows 98/2000/XP, Windows 7/10 (with legacy driver support), and Linux kernel versions supporting PCMCIA serial devices.
5. Components & Accessories
Included Items:
- COMpad-32B-4 PCMCIA Type II card
- Multi-port breakout cable with four DB9 male connectors
- Driver and utility software (on CD or downloadable package)
- Quick installation guide and documentation
Optional Accessories:
- Extended-length RS-232 cables (DB9 male-to-female)
- DB9-to-terminal block adapters for industrial wiring
- Protective carrying case for field use
- Replacement breakout cable assemblies
Connectors:
- PCMCIA 68-pin host interface connector (card edge)
- Breakout cable connector (high-density mini connector on card side)
- Four DB9 male connectors on breakout cable for RS-232 ports
6. Installation & Setup
Requirements:
- Host system with available PCMCIA Type II slot
- Supported operating system with PCMCIA and serial port driver support
- Administrative privileges for driver installation
Installation Steps:
1. Power off the host system (if required by OS).
2. Insert the COMpad-32B-4 card into the PCMCIA slot until it is firmly seated.
3. Connect the breakout cable to the card’s high-density connector.
4. Attach serial devices to the DB9 male connectors.
5. Power on the system; the operating system should detect the new hardware.
6. Install the provided drivers or use native serial drivers if supported.
7. Verify COM port assignments in the system device manager or terminal software.
Mounting Options:
- Direct insertion into PCMCIA slot (no external mounting required).
- Optional cable strain relief or clip for securing breakout cable in mobile environments.
Configuration:
- COM port numbers can be configured via driver settings.
- Baud rate, parity, and flow control parameters adjustable through standard serial communication software.
7. Performance & Capabilities
Data Throughput:
- Supports baud rates up to 115.2 kbps per port, suitable for most RS-232 applications.
- Hardware FIFO buffering (16 bytes) ensures stable data transmission with minimal data loss.
Capacity:
- Four independent serial channels operating concurrently.
- Each port can handle full-duplex communication with separate devices.
Efficiency:
- Low CPU utilization due to hardware buffering and efficient driver design.
- Minimal latency for command-response applications.
Limitations:
- RS-232 standard limits cable length to approximately 15 meters at 19.2 kbps (shorter at higher baud rates).
- Not suitable for RS-422/485 communication without external converters.
- Requires PCMCIA slot (not compatible with ExpressCard or USB without adapters).
Reliability:
- Proven Moxa serial technology ensures stable operation in industrial and mobile environments.
- Robust electrical design protects against transient voltage spikes and signal interference.
8. Standards & Compliance
Industry Standards:
- PCMCIA 2.1 / JEIDA 4.2 compliant
- RS-232 (EIA/TIA-232-F) compliant
- UART 16550C compatible
Certifications:
- CE (Electromagnetic Compatibility)
- FCC Part 15 Class B (Electromagnetic Interference)
- RoHS compliant (Restriction of Hazardous Substances)
- WEEE compliant (Waste Electrical and Electronic Equipment Directive)
Regulatory Compliance:
- Designed and manufactured in accordance with ISO 9001 quality management standards.
- Meets or exceeds industrial-grade reliability and safety requirements for serial communication devices.
9. Additional Information
Warranty:
- Standard 3-year limited hardware warranty from Moxa Technologies.
- Covers defects in materials and workmanship under normal use conditions.
Support:
- Comprehensive technical support via Moxa’s global support network.
- Online resources including driver downloads, firmware updates, and knowledge base articles.
- Email and phone support available during standard business hours.
Maintenance:
- No regular maintenance required beyond ensuring clean connector contacts.
- Firmware and driver updates available periodically to maintain compatibility with new operating systems.
Product Lifecycle & Updates:
- Long-term availability typical of Moxa industrial communication products.
- Backward compatibility with previous COMpad series models.
- Replacement and upgrade options available for legacy PCMCIA-based systems transitioning to newer interfaces.
Summary
The Moxa COMpad-32B-4 PCMCIA Type II Serial 4×RS-232 Interface is a compact, high-performance solution for expanding serial connectivity on portable and embedded systems. With four independent RS-232 ports, 16550C UARTs, and robust industrial-grade design, it delivers reliable multi-port communication in a single, space-efficient form factor. Ideal for engineers, technicians, and system integrators requiring multiple serial connections in mobile or field environments, the COMpad-32B-4 combines Moxa’s renowned reliability with ease of installation and broad compatibility.
Keywords: COMpad-32B-4, Moxa, PCMCIA Type II, 4-port RS-232, serial interface card, 16550C UART, DB9 male, multi-port serial adapter, industrial communication, laptop serial expansion.
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