Startech PEX4S953LP, Bus PCI Express, Port-4, Data Bits 5, 6, 7, 8, 9, FIFO 256 Bytes, Max Baud Rate 921.6 Kbps, MTBF 214,358 hours, Connector 1 - PCI Express x1 Male, External Ports 4 - DB-9 (9 pin, D-Sub) Male, Internal Ports 1 - LP4 (4 pin; Large Drive Power) Male Input, Included 1 - 4-Port Low Profile Serial Card, 1 - 4-Port DB9 Break-out Cable, 1 - Full Profile Bracket, 1 - Quick-Start Guide. This PCI Express RS232 serial adapter card lets you add four RS232 (DB9) serial ports to your computer through a PCI Express (PCIe) slot. The 4 port PCIe serial card enables you to interac