AOpen AX6BC Pro Gold Online Manual page 112

A X 6 B C P r o G o l d O n l i n e M a n u a l
A X 6 B C P r o G o l d O n l i n e M a n u a l
 You cannot use both USB driver and USB legacy keyboard at the
same time. Disable "USB Keyboard Support" if you have USB driver in
the operating system.