Lenovo LT1421 Wide Flat Panel Monitor - Manual (Page 6)

Product overview
This section will provide information on adjusting monitor positions, setting user
controls, and using the cable lock slot.
Types of adjustments
Tilt
Please see the illustration below for an example of the tilt range.
1-2 L T1421 Wide Flat Panel Monitor User’s Guide
User controls
Your monitor has brightness control on the back which are used to adjust the display.