100 percent compatible with all parallel printers, tape backups, and operating systems (including MS-DOS, PC-DOS, DR-DOS, CCI-DOS, Windows® 1.x, 2.x, 3.x, WFW, 95, NT 3.x, 4.x, Mac® OS/2 1.x, 2.x, Warp 3.x, 4.x, SCO Unix®, Linux, etc). Fully 8-bit bi-directional and with a single 25-pin female parallel port, this card is configurable as LPT 1 through LPT 3 using IRQ 5/7/none. It supports industry standard addresses, and is ideal for use with network print servers.