Lenovo THINKCENTRE M810z 10NX User Manual And Hardware Maintenance Manual page 6

Overview
Power button
8
Used to turn on your computer. You also can use the power
button to turn off your computer only when you cannot use
any Microsoft® Windows® shutdown procedure to turn off
your computer.
Microphone-mute button
9
Used to mute or unmute the microphones.
Brightness-down control
10
Used to decrease the brightness.
Brightness-up control
11
Used to increase the brightness.
Optical drive eject/close button
12
Used to eject the tray of the optical drive from the drive.
After you insert a disc into the tray, press the eject/close
button to close the tray.
6