W-9922-4S High-Speed 4-Port PCI-E Expansion Card

Overview of the W-9922-4S PCI-E Expansion Card

The W-9922-4S PCI-E Expansion Card is a high-performance multi-port serial communication solution designed for systems that require stable, flexible, and high-speed data transmission. Featuring four independent UART channels and PCI Express connectivity, this expansion card helps increase serial communication capacity without requiring major changes to the host system.

The card is fully compliant with PCI Express Base Specification Revision 1.0a and integrates four 16C450, 16C550, and Extended 550 compatible UARTs. Each serial port features deep on-chip FIFO memory in both transmit and receive paths, helping support smoother data handling in demanding communication applications.

With bi-directional transmission speeds ranging from 50 bps to 16 Mbps per port, the W-9922-4S is suitable for applications requiring anything from low-speed serial communication to high-speed data exchange.

Key Features

The W-9922-4S PCI-E Expansion Card combines multi-port expansion, broad UART compatibility, and flexible transmission performance in one PCI Express solution.

• Fully compliant with PCI Express Base Specification Revision 1.0a

• Four independent UART channels

• Compatible with 16C450 / 16C550 / Extended 550 UARTs

• 256-byte FIFO in the transmit path of each serial port

• 256-byte FIFO in the receive path of each serial port

• Bi-directional communication speed from 50 bps to 16 Mbps per port

• Supports multiple Windows 32-bit and 64-bit operating systems

• Driver support for Linux Kernel 2.6.11 and above

• Driver support for MAC OS 10.4.X and above

• Designed for systems requiring additional serial communication capability

Technical Specifications

Specification	W-9922-4S Details
Product Model	W-9922-4S
Product Type	PCI-E Expansion Card
PCI Express Standard	PCI Express Base Specification Revision 1.0a
UART Channels	4
UART Compatibility	16C450 / 16C550 / Extended 550
Transmit FIFO	256 Bytes per Serial Port
Receive FIFO	256 Bytes per Serial Port
Communication Direction	Bi-directional
Transmission Speed	50 bps to 16 Mbps / Port
Windows Support	Windows 2000 / XP / 2003 Server / Vista
Windows Architecture	32-bit / 64-bit
Linux Support	Linux Kernel 2.6.11 and above
MAC Support	MAC 10.4.X and above

Four UART Channels for Multi-Port Communication

One of the main advantages of the W-9922-4S 4-port PCI-E expansion card is its ability to provide four UART communication channels through a PCI Express-based solution.

For industrial computers, communication systems, control platforms, and other equipment that requires multiple serial communication channels, this configuration can provide a practical way to expand communication capacity.

The integrated UARTs are compatible with 16C450, 16C550, and Extended 550 architectures, helping the card support a broad range of serial communication requirements.

256-Byte FIFO for Efficient Data Handling

Each serial port includes an on-chip 256-byte FIFO in both the transmit and receive paths.

FIFO capacity is an important consideration in serial communication because buffered data handling can help improve the efficiency of communication between the host system and connected devices.

Compared with designs that rely on very limited buffering, deeper FIFO capacity provides additional room for temporary data storage during transmission and reception. This makes the W-9922-4S PCI-E serial expansion card suitable for applications involving continuous or higher-volume serial data exchange.

Flexible Speeds from 50 bps to 16 Mbps per Port

Different communication devices may operate at very different data rates. The W-9922-4S supports bi-directional speeds from 50 bps up to 16 Mbps on each port, offering flexibility for both low-speed and high-speed serial communication applications.

This wide speed range allows system developers and equipment integrators to select communication parameters according to the requirements of connected equipment.

Communication Requirement	Supported Capability
Low-Speed Serial Data	From 50 bps
Variable-Speed Communication	Supported
High-Speed Serial Data	Up to 16 Mbps / Port
Multi-Port Operation	Four UART Channels
Bi-Directional Data Transfer	Supported

Multi-Platform Driver Support

Operating system compatibility is another important factor when selecting a PCI Express serial expansion card.

The W-9922-4S provides driver support for multiple operating environments, including:

• Windows 32/64-bit 2000

• Windows XP

• Windows 2003 Server

• Windows Vista 32-bit and 64-bit

• Linux Kernel 2.6.11 and above

• MAC 10.4.X and above

This multi-platform support makes the card suitable for system integrators working with different computer environments or maintaining equipment based on established operating systems.

Suitable for System Integration and Serial Port Expansion

The W-9922-4S PCI-E Expansion Card is designed for applications where additional UART communication channels are required through a PCI Express platform.

Its four-channel architecture, extended UART compatibility, 256-byte transmit and receive FIFOs, and wide communication speed range make it a practical option for equipment manufacturers, system integrators, industrial computer suppliers, and communication solution providers.

Whether the requirement involves expanding serial communication capability, integrating multiple communication devices, or supporting higher-speed data transmission, the W-9922-4S provides a clearly defined set of technical features for system design.

Request More Information About the W-9922-4S

Looking for a 4-port PCI-E Expansion Card for your serial communication system?

Contact us with your application requirements, operating system, required communication speed, and integration needs. Our team can provide additional product information to help you evaluate whether the W-9922-4S PCI-E Expansion Card is suitable for your project.

Request a quote or send us your technical requirements today.