EXSYS EX-45364 PCI Express Dual Port RS-232 Serial Adapter Card, 16C950 UART, Low Profile

Add two high-speed RS-232 serial ports to any PCI Express slot with the EXSYS EX-45364. Equipped with a 16C950 UART and 256-byte FIFO buffers per port, it delivers reliable data transfer rates up to 921.6 Kbps, making it ideal for industrial automation, POS systems, and legacy device connectivity.

Overview

The EX-45364 is a PCIe x1 expansion card that provides two DB9 male RS-232 serial ports. It uses the ASIX AX99100 chipset and supports hardware and software flow control, ensuring stable communication with a wide range of serial devices. The card includes both low-profile and standard brackets for flexible installation in slim or full-size desktop systems.

What stands out

• Dual RS-232 ports with 16C950 UART and 256-byte FIFO per port
• Data transfer rates up to 921.6 Kbps per port
• PCI Express x1 interface, compatible with PCIe 1.0/2.0/3.0 slots
• Supports Windows, Linux, and macOS operating systems
• Low-profile form factor with standard bracket included
• ESD protection up to 15KV for enhanced reliability

Technical details

• Host interface: PCI Express x1
• Output interface: RS-232 (DB9 male)
• Chipset: ASIX AX99100
• Data transfer rate (max): 921.6 Kbps per port
• UART compatibility: 16C950
• FIFO buffer: 256-byte transmit/receive per port
• Flow control: Hardware (RTS/CTS), Software (XON/XOFF)
• Parity: Even, Odd, None, Mark, Space
• Data bits: 5, 6, 7, 8
• Stop bits: 1, 1.5, 2
• Operating temperature: 0°C to 70°C
• Operating relative humidity: 5% to 95% RH (non-condensing)
• ESD protection: 15KV
• Expansion card standard: Low Profile (standard bracket included)
• Internal: Yes

Our verdict

The EXSYS EX-45364 is a robust dual-port serial adapter that combines high-speed performance with broad OS support and flexible mounting options, making it a dependable choice for extending legacy serial connectivity in modern systems.