1. SOURCE Toggles between video inputs:RGB PC - VGA or 15-pin D-Sub analog signalHDMI/DVI - Digital signalDisplayPort (DP) - Digital signal5. Power Press to turn on the power. Press again to turn itoff.2. MENU Opens or closes the OSD (On-screen Display)menu screen.6. IRreceiverReceives signals from the remote control.3. OSD OSD select/adjust buttons: Selects an OSD menuicon or adjusts the settings in the OSD screen. (Adjusts up and down; Adjusts the volume)7. PowerindicatorLights up blue when the display operatesnormally (on mode). If the display is in sleep(Energy Saving) mode, the indicator color changesto amber.4. AUTO/SET When OSD window is closed, activates the autoadjustment feature to optimize the screen image.When OSD window is open, press to select a menuitem or save changes.QuickSpecs HP LD4210 42-inch LCD Digital Signage DisplayOverviewDA - 13926 North America — Version 4 — April 17, 2013 Page 1