Bottom view
Label Description
1
2
3
4
5
6
AC power cord connector
DVI connector
HDMI connector
VGA connector
Audio
Audio Line out
Monitor Specifications
Power Management Modes
If you have VESA's DPMS™ 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 input from a keyboard, mouse or other input devices is detected by the computer, the monitor will automatically "wake up". The following table shows the power consumption and signaling of this automatic
ST2420L/ST2421L
VESA Modes
Normal operation
Switch off
Horizontal | Vertical Sync | Video |
Sync |
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Active | Active | Active |
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Inactive | Inactive | Blanked |
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- | - | - |
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Power
Indicator
White
Amber
Off
Power Consumption
30 W (maximum)
20 W (typical) 
Less than 1 W
Less than 0.5 W
NOTE: This monitor is ENERGY
NOTE: Zero power consumption in OFF mode can only be achieved by disconnecting the main cable from the monitor.
