AAEON AEC-6967 - Manual (Page 58)

E m b e d d e d C o n t r o l l e r A E C - 6 9 6 7
USB Configuration
Options Summary :
Enabled Default
Disabled Legacy USB Support
Auto
Enable Legacy USB support.
AUTO option disables legacy support if no USB devices are
connected. DISABLE option will keep USB devices available only
for EFI applications.
Chapter 3 AMI BIOS Setup 3-20