Supported operating system:

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

Release note:
HP Designjet 100plus printer PCL3GUI version 7.00 driver for WinXP-64/2003-64/Vista-64/2008-64/Win7-64 released on 29th July 2010.

Supported Devices:
HP designjet 100plus