EXSYS EX-44083 PCIe 2-Port RS-232 Serial Card, ASIX AX99100, DB9, Low Profile

The EXSYS EX-44083 is a PCI Express x1 expansion card that adds two RS-232 serial ports to your desktop computer, supporting baud rates up to 921.6 Kbps for reliable connectivity with legacy industrial equipment, POS terminals, and laboratory instruments.

Advantages

Built around the ASIX AX99100 chipset, this card delivers stable, high-speed serial communication with a 256-byte FIFO buffer per port to prevent data loss under heavy loads. It supports a wide range of operating systems, including Windows, Linux, and macOS, and comes with both standard and low-profile brackets for flexible installation in slimline or standard desktop cases.

Suitable for

• Connecting RS-232 devices such as barcode scanners, receipt printers, CNC machines, and modems
• Industrial automation and control systems requiring multiple serial ports
• Legacy hardware integration in modern PCs without native serial ports

Key specifications

• Host Interface: PCI Express x1 (PCIe 1.1, backward compatible)
• Serial Ports: 2x RS-232 DB9 male connectors
• Chipset: ASIX AX99100
• Max Baud Rate: 921.6 Kbps
• FIFO Buffer: 256 bytes per port
• Data Bits: 5, 6, 7, 8
• Stop Bits: 1, 1.5, 2
• Parity: Even, Odd, None, Mark, Space
• Flow Control: None, Xon/Xoff, RTS/CTS, DTR/DSR
• Operating Temperature: 0°C to 70°C
• OS Support: Windows (11/10/8.1/8/7/Vista/XP, Server 2022/2019/2016/2012/2008/2003), Linux (Kernel 2.6+), macOS (10.4+)
• Form Factor: Standard profile with low-profile bracket included

Recommendations

For reliable multi-port serial connectivity in industrial or business environments, the EX-44083 offers proven compatibility and performance. Ensure your system has an available PCIe x1 slot and install the appropriate drivers from the included CD or manufacturer's website.