Dell E2311H, E2211H appendix

If you have VESA's DPM™ compliance display card or software installed in your PC, the monitor can automatically reduce its power consumption when not in use. referred to as Power Save Mode*. If the computer detects input from keyboard, mouse, or other input devices, the monitor automatically resumes functioning. The following table shows the power consumption and signaling of this automatic power saving feature:

E2211H
VESA Modes	Horizontal Sync	Vertical Sync	Video	Power Indicator	Power Consumption
Normal operation	Active	Active	Active	Blue	20 W (typical)/28 W (maximum)
Active-off mode	Inactive	Inactive	Blanked	Amber	Less than 1.0 W
Switch off	-	-	-	Off	Less than 0.5 W