HP Z400 Workstation - Manual (Page 14)

Product updates
Table 1-5 Product updates
Topic Location
Software, BIOS, and driver
updates See http://www.hp.com/go/workstationsupport to verify that
you have the latest drivers for the workstation.
To locate the current workstation BIOS on your Microsoft
Windows workstation, select Start>Help and Support>Pick
a Task>Use Tools to view...>Tools>My Computer
Information>View general system information....
Operating system For information on operating systems supported on HP
workstations, see
http://www.hp.com/go/wsos .
6 Chapter 1 Locating HP resources ENWW