Dell Command | Configure Version 3.1 Command Line Interface Reference Guide

Valid Argument	off, on/100, auto, 25, 50, 75
Description	Sets the keyboard illumination to the required light intensity. off — Sets the illumination to off. on — Sets the illumination to 100 percent. auto — Sets the illumination based on ambient light level. 25 — Sets the illumination to 25 percent. 50 — Sets the illumination to 50 percent. 75 — Sets the illumination to 75 percent.
Example	C:\>cctk --keyboardillumination=on keyboardillumination=on

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