HP Compaq 6000 Reference Manual page 47

3.
Connect a cable (VGA, DVI. or HDMI, depending on your application) between the adapter (2)
and a second display (3).
4. Turn on power to the computer and the second display.
NOTE:
Use the graphics card software or the Windows Display Settings to configure the second
display as a mirrored image of the primary monitor or an extension of the primary monitor.
ENWW
Connecting an Optional DisplayPort Video Adapter
41