Dell P2815Q Monitor - Manual (Page 43)

Operating the Monitor
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43
DisplayPort
1.2
Press the key to enable or disable DisplayPort 1.2. To use
the DP MST (Daisy Chain) feature, enable DP 1.2.
NOTE: Ensure your graphics card can support these
features before selecting DP 1.2. Wrong setting may result
in blank screen. Some graphics card do not support MCCS
(Monitor Control Command Set) at DP 1.2. In these cases,
DDM (Dell Display Manager) may not run.
DisplayPort 1.2 is disabled when input source is HDMI .
Reset Display
Settings Select this option to restore default display settings.
Energy
Settings
Power Button
LED Allows you to set the power LED indicator on or off to save
energy.
USB By turning on or off to control USB power supply while
monitor under standby mode but without USB upstream
cable .
Reset Energy
Settings Select this option to restore default Energy Settings.