Dell Command | Configure Version 4.1.0 Command Line Interface Reference Guide

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

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