"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, Windows-95, NT 3.x, 4.x, OS/2 1.x, 2.x, Warp 3.x, 4.x, SCO Unix, Linux, etc). Features: Single 25-pin female Parallel Port. Fully 8-bit bi-directional; suitable for all printers and tape back-ups. Configurable as LPT 1 through LPT 3 using IRQ 5/7/none. Supports industry standard addresses. Ideal for use with network print servers."