ExpressCard providing one port RS232. Up to 921,600 data transfer rates and the 256 byte deep transmit and 256 byte receive FIFOS, coupled with 1Mbit/s line drivers deliver uncompromising performance on your laptop. Drivers for Windows 32 bit and 64 bit Operating Systems including Windows XP, Server 2003, Vista, Server 2008 and Windows 7.This high performance range utilising PCIe native drivers. Excellent method of adding extra serial ports to your laptop. Manufacturer PN: XC-235 1 port RS232 ExpressCard PCIe Implementation 256Byte Tx and 256Byte Rx FIFOs Up to 921,600 Baud DB9 connector -- 9 Pin Male Drivers for all popular operating systems Sample Programs, Test & Terminal software Brainboxes Lifetime Support Brainboxes Lifetime Warranty (Brainboxes registration required)