StarTech 4 Port Buffered High-Speed 16950 Serial PCI Card Model PCI4S9503V Type: PCI to Serial Port Card External Ports: 4 x Serial Port (DB 9-pin Male) Data Transfer Rate: Up to 921.6 Kbits/sec Operating Systems Supported: Windows 98SE/2000/NT/XP/Vista Linux & Unix SCO Open Server Dimensions: 3.96 x 4.96 Weight: 1.04 lbs. (include package) Package Contents: PCI4S9503V Expansion Cable: 1 x 37-pin (male) & 4 x 9-pin (male)