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To unlock the button(s), press and hold the joystick to the up or down or left or
right for 4 seconds. Select the Unlock icon to unlock the button(s).
Always On USB Type-C Charging
The monitor allows you to charge your notebook or mobile devices through the USB
Type-C cable even when the monitor is powered off. See USB-C Charging 90W
for more information.
You may verify your current firmware revision in Firmware. If this is not available,
go to the Dell download support site for the latest application installer (Mo
nitor
Firmware Update Utility.exe) and refer to the Firmware Update Instruction
User's Guide: www.dell.com/U3423WE.
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