Toshiba PSK3AU-00Q014 Owner's Manual page 141

USB
Legacy USB Support
Use this option to enable or disable USB Legacy Emulation. If your
operating system does not support USB, you can still use a USB mouse
and keyboard by setting the Legacy USB Support item to enabled.
Enabled
Disabled
User's Manual
Enables the USB Legacy Emulation (Default).
Disables the USB Legacy Emulation.
HW Setup
7-5