HP ROM-Based Setup Utility - Manual (Page 187)

Embedded VGA Control
NOTE: The operating system video driver must support dual monitors.
NOTE: The Embedded VGA Control option does not work with all video adapters.
The Embedded VGA Control option, set to Auto Detect by default, disables the embedded video
controller when an optional video controller is installed on the server.
When Always Enabled is selected, the system ROM enables the embedded video controller as the
primary video controller. This option provides dual-head support from both the embedded and
optional video controllers.
For more information on feature support and how to enable functionality, see the operating system
and video driver documentation.
Advanced Options menu 187