Features : - 2 RS232 serial ports & 1 parallel port allow to connect more devices to your computer. - Stable and reliable WCH CH382L. - Standard RS-232 DB 9pin serial port compliant. - Standard IEEE 1284 DB25 parallel port compliant. - Compliant with Single-Lane (x1) PCI-Express specification revision 1.0a. - Supports 2.5Gbps PCI-E bus with full duplex channel. - 2 external RS-232 DB9 serial port & 1 external DB25 parallel port available.
Operating System: Windows 98/Me/2000/XP/Vista/Win7/Win8/Server2003/Server2008/Linux.
Package content: 1X Brand New 2 Serial Port & 1 Parallel Port PCI-E Card. 1X CD Driver.