1. Product Overview
Product Name: PCI 2*Serial 1*Parallel Port Expansion Card
Model: KW-222N-2
Series: KW Series – Multi-I/O PCI Interface Adapters
Article Number: KW-222N-2
Manufacturer: (Not explicitly stated; typically distributed under the KW brand or compatible OEM manufacturers utilizing the NetMos chipset)

The KW-222N-2 is a high-performance PCI expansion card designed to add two serial (RS-232) ports and one parallel (printer) port to a desktop computer system. It is built around the NetMos NM9835CV controller chipset, providing reliable and efficient communication for legacy and industrial peripherals. The card is ideal for users who require additional COM and LPT ports for industrial automation, instrumentation, point-of-sale (POS) systems, or legacy hardware integration.

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2. Key Features
- Dual Serial Ports (RS-232): Provides two independent serial communication interfaces for connecting modems, barcode scanners, industrial controllers, or other serial-based devices.
- Single Parallel Port (LPT): Adds one standard DB25 female parallel port for printers, CNC controllers, or other parallel-interface equipment.
- High-Speed Data Transfer: Supports up to 1 MByte/s data rate on serial ports and up to 1.5 MByte/s on the parallel port, ensuring fast and stable communication.
- Advanced UART Technology: Equipped with 16-byte FIFO UART buffers for each serial channel, minimizing CPU load and improving data throughput during high-speed transfers.
- Reliable NetMos NM9835CV Chipset: Utilizes the proven NetMos (MosChip) NM9835CV PCI controller, known for its stability, compatibility, and broad driver support.
- Plug-and-Play PCI Interface: Fully compliant with the PCI 2.2 specification, allowing automatic resource allocation and easy installation in standard PCI slots.
- Comprehensive OS Support: Includes Windows driver CD for quick setup and compatibility with major Windows operating systems.
- Flexible Port Layout: Two DB9 male connectors are integrated directly on the card bracket, while the DB25 female parallel port is provided on an additional slot bracket connected via ribbon cable.
- Industrial and Legacy Support: Ideal for environments requiring continued use of RS-232 and LPT interfaces, such as manufacturing, laboratory, and embedded systems.

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3. Technical Specifications
- Chipset: NetMos NM9835CV (PCI-to-Serial/Parallel Controller)
- Bus Interface: PCI 32-bit, 33 MHz, compliant with PCI Revision 2.2
- Serial Ports:
- Quantity: 2
- Connector Type: DB9 male (on main card bracket)
- Interface Standard: RS-232
- Data Rate: Up to 1 MByte/s
- FIFO Buffer: 16-byte UART per port
- Signal Lines: TXD, RXD, RTS, CTS, DTR, DSR, DCD, RI, GND
- Parallel Port:
- Quantity: 1
- Connector Type: DB25 female (on secondary slot bracket)
- Interface Standard: IEEE 1284-compatible (SPP/EPP/ECP modes)
- Data Rate: Up to 1.5 MByte/s
- Dimensions:
- Main PCI Card: Approx. 120 mm (L) × 65 mm (H) × 15 mm (D)
- Secondary Bracket (Parallel Port): Approx. 80 mm (L) × 20 mm (H) × 15 mm (D)
- Weight: Approx. 80–100 g (including secondary bracket and cable)
- Material:
- PCB: Multi-layer FR-4 fiberglass
- Connectors: Nickel-plated steel brackets, gold-plated contacts for signal integrity
- Operating Voltage: 5 V (supplied via PCI bus)
- Power Consumption: < 2 W typical
- Operating Temperature: 0°C to 55°C
- Storage Temperature: -20°C to 85°C
- Humidity: 5%–95% non-condensing

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4. Functionality
The KW-222N-2 functions as a PCI-based I/O expansion card that adds two serial and one parallel port to a computer system. Once installed in a standard PCI slot, the card is automatically detected by the system BIOS and operating system. The included driver software enables full configuration and operation of the ports.

Use Cases and Applications:
- Industrial Automation: Connect PLCs, sensors, and control modules using RS-232 communication.
- Point-of-Sale (POS) Systems: Interface with receipt printers, barcode scanners, and cash drawers.
- Laboratory Equipment: Communicate with measurement instruments and data loggers.
- Legacy Hardware Integration: Maintain compatibility with older printers, plotters, and CNC machines.
- Embedded Systems Development: Provide additional serial interfaces for debugging and device communication.

Compatibility:
- Compatible with standard PCI slots on desktop PCs and industrial computers.
- Supported Operating Systems: Windows 98/ME/2000/XP/Vista/7/8/10/11 (32-bit and 64-bit, depending on driver availability).
- Backward compatible with legacy serial and parallel devices.

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5. Components & Accessories
Included Items:
- 1 × KW-222N-2 PCI expansion card (with 2 × DB9 male connectors)
- 1 × Secondary slot bracket with DB25 female parallel port (connected via ribbon cable)
- 1 × Driver CD (Windows drivers and installation guide)
- 1 × Quick installation leaflet or manual

Optional Add-ons (not included):
- DB9-to-DB25 serial adapters
- RS-232 extension cables
- Parallel printer cables (DB25 male-to-Centronics 36-pin)
- PCI slot covers or low-profile brackets (if required for compact systems)

Connectors:
- Serial Ports: Two DB9 male connectors directly accessible on the main bracket.
- Parallel Port: One DB25 female connector on a separate bracket, connected internally via a 26-pin ribbon cable header.

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6. Installation & Setup
System Requirements:
- Available PCI slot (32-bit, 33 MHz)
- Compatible motherboard supporting PCI interface
- Windows operating system (driver CD included)
- Administrative privileges for driver installation

Installation Steps:
1. Power off the computer and disconnect the power cable.
2. Open the system chassis and locate an available PCI slot.
3. Insert the KW-222N-2 card firmly into the PCI slot and secure it with a screw.
4. If using the parallel port, mount the secondary DB25 bracket in an adjacent slot and connect the ribbon cable to the card’s internal header.
5. Close the chassis and reconnect the power.
6. Boot the system; the operating system should detect new hardware.
7. Insert the driver CD and follow the on-screen instructions to install the appropriate driver.
8. After installation, verify the new COM and LPT ports in the Device Manager.

Configuration:
- Port assignments (COM1, COM2, LPT1, etc.) can be adjusted via Device Manager or BIOS settings if necessary.
- Baud rate, parity, stop bits, and flow control can be configured through software applications or serial communication utilities.

Mounting Options:
- Standard full-height PCI bracket (default).
- Optional low-profile bracket may be available for compact systems (not included).

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7. Performance & Capabilities
- Serial Communication Speed: Up to 1 MByte/s (approximately 8 Mbps equivalent) per port, depending on system configuration and cable quality.
- Parallel Communication Speed: Up to 1.5 MByte/s in EPP/ECP mode.
- FIFO Buffering: 16-byte FIFO per UART ensures smooth data flow and reduces CPU overhead during high-speed transfers.
- Interrupt and DMA Support: Fully supports interrupt-driven communication; DMA not typically required for standard serial/parallel operations.
- Latency and Throughput: Optimized for low-latency communication, suitable for real-time control and data acquisition tasks.
- Reliability: Based on the NetMos NM9835CV chipset, known for stable operation and long-term reliability in industrial environments.
- Limitations:
- Not compatible with PCI Express (PCIe) slots without an adapter.
- Limited to RS-232 signaling (no RS-422/RS-485 support).
- Parallel port limited to standard printer and peripheral communication (no GPIB or custom protocols).

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8. Standards & Compliance
- Bus Interface Compliance: PCI Revision 2.2
- Serial Port Standard: RS-232 (TIA/EIA-232-F)
- Parallel Port Standard: IEEE 1284 (SPP/EPP/ECP modes)
- Electrical Safety: Designed to meet CE and FCC Class B requirements for electromagnetic compatibility (EMC).
- RoHS Compliance: Manufactured in accordance with RoHS directives, restricting hazardous substances in electronic equipment.
- ESD Protection: Integrated ESD protection on I/O lines to safeguard against static discharge damage.
- Driver Certification: Windows WHQL-certified drivers (depending on OS version).

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9. Additional Information
Warranty:
- Typically supplied with a 1-year limited warranty covering manufacturing defects and hardware failures under normal use conditions.

Technical Support:
- Driver updates and technical documentation available through the manufacturer’s or distributor’s website.
- Email and online support channels for troubleshooting and configuration assistance.

Maintenance:
- No regular maintenance required beyond standard dust cleaning and ensuring secure cable connections.
- Firmware updates are not typically necessary, as the NM9835CV chipset operates with fixed logic.

Software & Driver Updates:
- Windows driver CD included; updated drivers may be available online for newer operating systems.
- Compatible with standard serial communication software and printer drivers.

Environmental Considerations:
- Low power consumption and RoHS-compliant materials minimize environmental impact.
- Suitable for continuous operation in office or industrial environments with adequate ventilation.

Packaging:
- Supplied in anti-static protective packaging with clear labeling of model and article number.
- Compact retail or OEM box includes all necessary components for immediate installation.

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Summary
The KW-222N-2 PCI 2*Serial 1*Parallel Port Card is a robust and versatile expansion solution for adding legacy communication interfaces to modern or industrial PC systems. Featuring the reliable NetMos NM9835CV chipset, it delivers high-speed, stable RS-232 and IEEE 1284 connectivity with minimal CPU overhead. Its dual DB9 serial ports and single DB25 parallel port configuration make it ideal for connecting a wide range of devices—from printers and modems to industrial controllers and laboratory instruments.

With plug-and-play PCI installation, comprehensive driver support, and compliance with major industry standards, the KW-222N-2 provides a cost-effective and dependable method to extend system I/O capabilities. Whether used in manufacturing, POS, or technical environments, it ensures continued compatibility with essential serial and parallel peripherals while maintaining high performance and reliability.