SYBA PCI to Serial 2-port host controller card Model SD-PCI-2S Type: PCI to Serial Port Card External Ports: 2x DB9 serial port connectors Operating Systems Supported: Windows 98SE/ME/2000/XP/NT4.0, Linux & DOS Operating System Weight: 0.4 Package Contents: Syba PCI to Serial 2-port host controller card User's manual Software driver disc x 1