Hotkeys 
 
 
Power   
Press the Power button to turn on/off the monitor. 
 
Menu/Enter 
Press to display the OSD or confirm the selection.     
 
4:3 or wide image ratio / > 
When there is no OSD, press hotkey continuously to change 4:3 or wide image ratio. (If the product screen size is   
4:3 or input signal resolution is wide format, the hot key is disable to adjust. ). (VGA)
 
 
Volume / >   
When there is no OSD, press Volume adjust volume. (HDMI) 
 
Source /Auto / Exit 
When the OSD is closed, press Auto/Source/Exit button continuously about 2 second to do auto configure . (VGA) 
When the OSD is closed, press Auto/Source/Exit button will be Source hot key function.