Dell E2311H Monitor - Manual (Page 10)

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. This is
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