StarTech.com 2-port PCI Express RS232 Serial Adapter Card - PCIe Serial DB9 Controller Card 16950 UART - Low Profile - Windows and Linux - 2-port PCI Express RS232 serial controller card w/16950 UART/ASIX AX99100 - Bi-directional speeds 921.6Kbps/port | 256 byte FIFO | 9th data bit - Pin 9 pwr out 5