Adjusting the screen lighting and speaker volume of the XO

The top row of the XO keyboard has three long buttons.

The long button on the far right controls the lighting on the screen and the volume of the speakers.

The left two keys control the lighting.

• Press the key with the small sun to dim the light on the screen. Press this key repeatedly to put the screen into greyscale mode, which saves power.
• Press the key with the large sun to increase the brightness of the light. Press this key repeatedly to go to color mode.

The two keys on the right of this long button control the sound.

• Press the key with the small audio icon to decrease the speaker volume, which also saves power.
• Press the key with the large audio icon to increase the speaker volume.