4 RS232 serial ports allow to connect more devices to your computer. Standard RS-232 DB 9pin serial port compliant. Compliant with Single-Lane (x1) PCI-Express specification revision 1.0a. Supports 2.5Gbps PCI-E bus with full duplex channel. Operating System: Windows 98/Me/2000/XP/Vista/Win7/Win8/Server2003/Server2008/Linux.
Package content: 1X Brand New 4 Serial Port PCI-E Card. 1X CD Driver.