Asus CROSSHAIR IV FORMULA User Guide - Page 102
Onboard USB 3.0 Controller [Enabled], USB Support [Enabled], Legacy USB Support [Auto]
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Onboard ATA Controller ROM [Enabled] This item appears only when you set the previous item to [Enabled]. [Enabled] Enables the onboard ATA controller ROM. [Disabled] Disables the onboard ATA controller ROM. Onboard USB 3.0 Controller [Enabled] [Enabled] Enables the USB 3.0 controller. [Disabled] Disables the controller. 3.5.4 USB Configuration The items in this menu allows you to change the USB-related features. Select an item then press to display the configuration options. Crosshair IV Formula BIOS Setup Advanced USB Configuration Module Version - 2.24.5-13.4 Enable support for all USB ports. USB Devices Enabled: 1 Keyboard USB Support Legacy USB Support USB 2.0 Controller Mode BIOS EHCI Hand-off [Enabled] [Auto] [HiSpeed] [Enabled] The USB Devices Enabled item shows the auto-detected values. If no USB device is detected, the item shows None. USB Support [Enabled] [Enabled] Enables the USB Host Controllers. [Disabled] Disables the controllers. The following items appear only when you set USB Functions to [Enabled]. Legacy USB Support [Auto] [Disabled] Disables the function. [Enabled] Enables the support for USB devices on legacy operating systems (OS). [Auto] Allows the system to detect the presence of USB devices at startup. If detected, the USB controller legacy mode is enabled. If no USB device is detected, the legacy USB support is disabled. 3-26 Chapter 3: BIOS setup