DescriptionHuidu VP210H Key Description Power switch Controls AC power inpu LCD display Debugging displays menus, screen parameters and other information IR Receive infrared remote control MENU Press the knob to enter submenu or confirm selection Rotate the knob to select menu items or adjust parameters ESC Escape key/return key SCALE Partial/full screen switch button HDMI1 Select HDMI signal to play/play the previous U disk program HDMI2 Select HDMI signal to play/play the next U disk program DVI Select DVI signal playback/U disk program playback and pause VGA/CVBS Select VGA/CVBS signal playback USB Select to play U disk program/stop playing U disk program FREEZE Freeze with one click