This Cable allows you to connect an RS232 serial device to your PC through the USB 2.0 port with up to 230 kbps data transfer rate. This 3 foot long cable has a DB9 male connector (serial) on one end and a USB A male connector on the other. It supports Windows 98/98SE/ME/2000/XP/ Windows 7 (32 and 64 bit). It is a FINAL SALE item, no return/ no refund.