Dell C7017T User Manual page 42

Energy
Power Button
LED
USB
Reset Energy
42 Operating the Monitor
Allows you to set the power LED indicator on or off during active
to save energy.
Allows you to enable or disable USB function during monitor
standby mode.
NOTE: USB ON/OFF under standby mode is only available when
USB upstream cable is unplugged. This option will be greyed out
when USB upstream cable is plugged in.
Select this option to restore default Energy settings.