Supported operating system:

Windows XP 32-bit
Windows Vista 32-bit
Windows Vista 64-bit
Windows 7 32-bit
Windows 7 64-bit
Windows Server 2003 32-bit
Windows Server 2008 32-bit
Windows Server 2008 64-bit

Release note:
Fix/Enhancement

1. USB set of of wireless issue fixed
2. Fixed compatibility issue between UPD and PCL 6 driver
3. Fixed issue where the color navy blue looks black
4. Updated links in HP Help and Learn Center

Supported Devices:
HP LaserJet Professional CP1020 Series