HP LaserJet Pro MFP M521 - User's Guide
M521dn
A8P79A
M521dw
A8P80A
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Windows XP Service Pack 2 (
Windows Vista
Windows 7
Windows 2003 Server) Service Pack 3(
Windows 2003 Server) Service Pack 3(
OS X v10.6.8 v10.3 Mac
USB 2.0
Ethernet //
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