This half size card provides two LPT parallel printer ports and two industry standard RS232 serial COM ports. The card has one LPT port and one RS232 port on its bracket, with the second LPT and RS232 ports on a separate bracket attached on a ‘fly-lead’. Serial Solutions Device Driver CD contains software for Windows 7, Server 2008, Vista, Server 2003, XP, 2000, Millennium, 98, 95, NT4, Windows 3.x, DOS and OS/2. Informative manuals and sample programs are supplied with full source code on CD!