The BIOS does not see the keyboard (as a keyboard at least.) Therefore, the keyboard does not function (until the OS loads.) My other USB keyboards work fine with the BIOS. I don't think it's a BIOS settings issue. It's set to allow USB devices at boot and it's up-to-date. It seems like it may either be a firmware issue or either the BIOS does not recognize it as an HID, but maybe a USB hub. I'll have to test that theory out.