POST Errors: USB Error Messages

Error Message

Description

Warning! Unsupported USB device found and disabled.

This message is displayed when a non-bootable USB device is enumerated and disabled by the BIOS.

Warning! EHCI controller disabled. It requires 64-bit data support in the BIOS.

The message is displayed to indicate the EHCI controller is disabled because of incorrect data structure. This condition occurs if the USB host controller requires 64-bit data structure while the USB is ported with 32-bit data structure.