The front controls on the AppleVision 1710 Display are for changing or selecting options and values for your monitor. However, the control buttons on the far left of the display are for use only with DOS/Windows computers. The two left buttons are for selecting on-screen menus; the middle button is for seleting a topic on a menu; and the two right buttons are for adjusting values up or down.
If you do not install the AppleVision software, you can use these buttons to manually adjust the monitor.