Lenovo G27e-20 27" 120 Hz Monitor - Manual (Page 22)

VESA hole
Step 5: Attach the LCD display to the wall, and follow the instructions in the wall-mounting
kit. For use only with UL Listed Wall Mount Bracket with minimum weight/load: 8kg
Note:
When you use a flexible arm, do not tilt the monitor downward by more than 5 degrees.
2-10 G27e-20 Flat Panel Monitor User’s Guide