Windows Vista x64 / 2003 x64 / 2008 x64 / 7 x64, WinXP x64
Driver for Lexmark X544
Recommended: Lexmark X543/X544/X546 Microsoft Windows XP / Server 2003 / Vista / Server 2008 / Windows 7 / Server 2008 R2- 64 bit PCL Emulation Driver - Microsoft WHQL Certified