AAEON EMB-Q77A - Manual (Page 45)

3-9 Chapter 3: BIOS setup
3.3.7 USB Configuration
The items in this menu allow you to change the USB-related features.
The USB Devices item shows the auto-detected values. If no USB device is
detected, the item shows None.
Intel USB2.0 EHCI Controller [Enabled]
[Enabled]
Enables USB2.0 EHCI Controller.
[Disabled] Disables USB2.0 EHCI Controller.
Legacy USB Support [Enabled]
[Enabled]
Enables the support for USB devices on legacy
operating systems (OS).
[Disabled] The USB devices can be used only for the BIOS setup
program.
[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.
Legacy USB3.0 Support [Enabled]
[Enabled]
Enables the support for USB 3.0 devices on legacy
operating systems (OS).
[Disabled] Disables the function.
[Disabled] Disables the function.