HP ProDisplay P223a User Guide - Page 21

Using Auto-Sleep Mode The monitor supports an OSD (On-screen display) menu option called Auto-Sleep Mode that allows you to enable or disable a reduced power state for the monitor. When Auto-Sleep Mode is enabled (enabled by default), the monitor will enter a reduced power state when the host PC signals low power mode (absence of either horizontal or vertical sync signal). Upon entering this reduced power state (sleep mode), the monitor screen is blanked, the backlight is turned off and the power LED indicator turns amber. The monitor draws less than 0.5 W of power when in this reduced power state. The monitor will wake from the sleep mode when the host PC sends an active signal to the monitor (for example, if you activate the mouse or keyboard). You can disable Auto-Sleep Mode in the OSD. Press one of the four front bezel buttons to activate the buttons, and then press the Menu button to open the OSD. In the OSD menu select Power Control > Auto-Sleep Mode > Off. Adjusting Low Blue Light Mode Decreasing the blue light emitted from the display reduces the blue light exposure to your eyes. HP monitors provide a setting to reduce blue light output and create a more relaxing and less stimulating image while you read content on the screen. To adjust your monitor to a comfortable viewing light, follow the steps below. Press one of the four OSD bezel buttons to activate the buttons, and then press the Color Control button and select Low Blue Light. OR Press one of the four OSD bezel buttons to activate the buttons, and then press the Menu button to open the OSD. In the OSD menu select Color Control>Low Blue Light. Using Auto-Sleep Mode 15