HP f1523 User Manual page 41

Technical Specifications
When the monitor is in the reduced power state, the monitor
utilizes less than 2 watts of power. There is a brief warm up
period before the monitor returns to its normal operating mode.
Refer to your computer manual for instructions on setting energy
saver features (sometimes called power management features).
✎
The above energy saver feature only works when connected to
computers that have energy saver features.
By selecting settings in the monitor's Energy Saver utility, you
can also program the monitor to enter into the reduced power
state at a predetermined time. When the monitor's Energy Saver
utility causes the monitor to enter the reduced power state, the
power light blinks amber.
User's Guide B–5