Dell IN1940MW Display - Manual (Page 25)

Front Panel Button
Use the buttons on the front of the monitor to adjust the image settings.
Front Panel Button Description
1
Up
Use the Up button to adjust (increase ranges) items in the OSD menu.
2
Down
Use the Down button to adjust (decrease ranges) items in the OSD menu.
3
OK
Use the OK button to confirm your selection.
4
Back
Use the Back button to go back to the previous menu.