Asus P5N73-CM - Manual (Page 80)

2-30 Chapter 2: BIOS setup
The items in this menu allows you to change the USB-related features. Select an
item then press <Enter> to display the configuration options.
USB Controller [Enabled]
Allows you to enable or disable the USB controller.
Configuration options: [Disabled] [Enabled]
USB 2.0 Controller [Enabled]
Allows you to enable or disable the USB 2.0 controller.
Configuration options: [Disabled] [Enabled]
USB Legacy Support [Enabled]
Allows you to enable or disable support for USB devices on legacy operating
systems (OS). Configuration options: [Disabled] [Enabled]
Select Menu
Item Specific Help
Enable or Disable USB
1.1 and 2.0 Controller
Phoenix-Award BIOS CMOS Setup Utility
Advanced
2.4.7 USB Configuration
USB Configuration
USB Controller [ Enabled ]
USB 2.0 Controller [Enabled]
USB Legacy support [Enabled]