The half size card provides three independent RS232 serial ports, using the standard ISA 9 pin Male D connectors. The three serial ports may be separately jumper configured as COM1 – COM8 with interrupt line jumpers set to IRQ 2-7, 10-12, 14-15. The card includes full 16 bit address decode for Windows 95 & 98. Serial Solutions Device Driver CD contains software for Windows Millennium, Windows 98, Windows 95, Windows NT4, Windows 3.x, DOS and OS/2. Informative manuals and sample programs are supplied with full source code on CD!