IEI Integration IMBA-XQ354 v1.10 - Manual (Page 152)

IMBA-XQ354 Motherboard
Page 132
Normally if this option is not enabled, any attached USB mouse or USB keyboard does not
become available until a USB compatible operating system is fully booted with all USB
drivers loaded. When this option is enabled, any attached USB mouse or USB keyboard
can control the system even when there is no USB driver loaded onto the system.

Disabled Legacy USB support disabled

Enabled D EFAULT Legacy USB support enabled

Auto Legacy USB support disabled if no USB devices are
connected
 USB 2.0 Controller [Enabled]
Use the USB 2.0 Controller BIOS option to enable or disable the USB 2.0 controller

Disabled USB 2.0 controller disabled

Enabled D EFAULT USB 2.0 controller enabled
 USB2.0 Controller Mode [HiSpeed]
Use the USB2.0 Controller Mode option to set the speed of the USB2.0 controller.

FullSpeed The controller is capable of operating at 12 Mb/s

HiSpeed D EFAULT The controller is capable of operating at 480 Mb/s
6.4 PCI/PnP
Use the PCI/PnP menu (
9
BIOS Menu 18) to configure advanced PCI and PnP settings.
WARNING:
Setting wrong values for the BIOS selections in the PCIPnP BIOS
menu may cause the system to malfunction.