Nikon Z 8 Reference Manual page 40

Tip: Notes on the Monitor
The angle of the monitor can be adjusted.
Tip: Product Serial Number
The serial number for this product can be found by opening the
monitor.
Tip: The LCD Illuminator
Rotating the power switch to D activates the backlights
for the buttons and control panels (LCD illuminator). The
backlights will remain lit for a few seconds after the power
switch is released. The backlights turn off when the switch
is rotated to D a second time or the shutter-release button
is pressed halfway. Activating the button backlight makes
the camera easier to use in the dark.
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Camera Body