Features High reliability SUNIX UL7502AQ Parallel controller on-board. Expands two IEEE1284 Parallel port on system. Compliance with PCI 33MHz Ver. 3.0/2.3/2.2./2.1 specification. Support IEEE 1284-1994 parallel port standard * ECP (Enhance Capacity Port) / EPP (Enhance Parallel Port) * SPP (Standard Parallel Port) / BPP (Bi-direction Parallel Port). Auto-switching between ECP/EPP/SPP/BPP modes without configuration. Plug-n-Play, I/O address and IRQ assigned by system. Certified by CE, FCC, RoHS, and Microsoft WHQL approval. Support Microsoft Windows, Linux, and DOS.