HP XA664AA Reference Manual page 85

Select
Device Configurations
To do this
●
Enable/disable USB legacy support (enabled by
default). When enabled, USB legacy support allows the
following:
◦
Use of a USB keyboard in Computer Setup even
when a Windows® operating system is not
running.
◦
Startup from bootable USB devices, including a
hard drive, diskette drive, or optical drive
connected by a USB port to the computer.
●
Enable/disable fan always on while connected to an AC
outlet (enabled by default).
●
Enable/disable Data Execution Prevention (select
models only; enabled by default). When enabled, the
processor can disable some virus code execution,
which helps to improve computer security.
NOTE: Availability of the options above varies by
computer model.
●
Enable/disable LAN Power Save (disabled by default)
●
Enable/disable Virtualization Technology (select models
only; disabled by default).
●
Enable/disable Wake on USB (disabled by default).
●
Enable/disable Num lk on at boot (disabled by default).
Computer Setup menus 75