Microsoft WHQL Certified. Supports printing from Windows 2000, Server 2003, XP, Vista. The Xerox WC 7132 PS driver offers two versions. Use the “Xerox WorkCentre 7132 PS A” driver only if you have the Integrated Office Finisher installed on the device. This is the RECOMMENDED driver to resolve the PSCRIPT COMPATIBILITY issues described in "Failure to Print Due to pscript5.dll Conflict" document at http://www.office.xerox.com/support/dctips/dc07cc0429.pdf