Lenovo E27q-20 27" 1440p Monitor - Manual (Page 23)

Step 4: Attach the mounting bracket from the VESA compatible wall mounting kit.
(100mm x100mm distance), the type of VESA mounting screw is M4 x 10 mm.
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
2-5 E27q-20 Flat Panel Monitor User’s Guide