Toshiba Satellite L675D - Manual (Page 141)

User’s Manual 7-5
HW Setup
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 Enables the USB Legacy Emulation (Default).
Disabled Disables the USB Legacy Emulation.