Acer Altos R720 Series User Manual page 124

114
USB Confguration
The USB Configuration submenu allows you specify settings for USB
devices.
Parameter
USB Controller
Legacy USB
Support
Port 60/64
Emulation
Device Reset
Timeout
Description
Enables or disables the USB controller.
If disabled, all the USB controllers will be
turned off and inaccessible to the OS.
Enables or disables the support for
legacy USB devices.
Enables or disables the I/O port 60/64h
emulation support.
This parameter is enabled for complete
USB keyboard legacy support for non-
USB aware OS.
Select the number of seconds POST waits
for the USB mass storage device after
the start unit command.
4 BIOS setup
Option
Enabled
Disabled
Enabled
Disabled
Enabled
Disabled
20 Sec
10 Sec
30 Sec
40 Sec