Supported operating system:

Windows XP 32-bit
Windows Vista 32-bit
Windows 7 32-bit
Windows Server 2003 32-bit
Windows Server 2008 32-bit

Release note:
HP Color LaserJet CP4005 pinter PCL 6 version 5.1.0.77 driver for WinXP/2003/Vista/2008/Win7 released on 27th July 2010.

Supported Devices:
HP Universal Printing PCL 6
HP Universal Printing PCL 6 (v5.1)