Asus G53JW - Manual (Page 47)

Notebook PC User Manual 47
Switches
Switches and Status Indicators
Light Cancellation key
Toggles the keyboard LED and the instant keys light ON and
OFF.
Turbo/Express Gate Key
Pressing this button will launch Express Gate when the
Notebook PC is powered off. Refer to the Express Gate User’s
Manual for details.
Pressing this button will boost the system performance to the
turbo mode when the Notebook PC is powered on. Press again
to switch back to the previous mode