Using the Buttons The front control panel contains the Power, Input Select, Menu, Freeze, Mute and volume control buttons. No. Name SMART Board MX procedure 1 Power Press to wake the display. Press to again enter Sleep mode. 2 Input select Press to switch input source. 3 Menu Press to open the display’s settings. 4 Freeze Press to freeze and unfreeze the screen. See  Freezing the screen 5 Mute Press to mute or unmute the volume. 6 Volume decrease Press to turn down the volume. 7 Volume increase Press to turn up the volume.   You can use the buttons on the front control panel to increase and decrease the volume. You can also use the buttons on the remote control. You can temporarily freeze the image on the screen by pressing the  Freeze  button on the front control panel (see  Front control panel ). NOTES   Freezing the screen does not pause any applications that are running on the connected computer. It simply freezes the display of those applications. Touch and ink are still active. To unfreeze the screen, press the  Freeze  button on the front control panel again.