Dell U3821DW 37.5" 21:9 Curved IPS Monitor (Silver) - Manual (Page 9)

About your monitor
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9
WARNING: The possible long-term effects of blue light emission from
the monitor may cause damage to the eyes, including eye fatigue,
digital eye strain, and so on. ComfortView feature is designed to reduce
the amount of blue light emitted from the monitor to optimize eye
comfort.
Identifying parts and controls
Front view
Label Description
1 Power LED indicator
Solid white light indicates that the monitor is turned on and functioning
normally. Blinking white light indicates that the monitor is in Standby
Mode.