StarTech.com 4 Port PCI Express RS232 Serial Adapter Card - Single-Lane PCI Express - Breakout Cable - RS232 Extension - PCIe Serial Card (PEX4S553B)
- Includes a full profile and low profile/half-height bracket.
- On chip 256-byte depth FIFO in transmit/receive path of each port.
- Single-Lane (x1) PCI-Express with throughput up to 2.5Gbps.
- Supports hardware and software flow control.