VESA mount

VESA mount refers to a set of standardized screw hole patterns on the back of a monitor, defined by the Video Electronics Standards Association, that let the same arms, stands, and wall mounts fit screens from different manufacturers. The two most common sizes on desktop monitors are 75 by 75 millimeters and 100 by 100 millimeters, measured between the screw holes.

Any monitor arm or stand described as VESA compatible is built around one or both of these hole spacings, along with a standard screw thread size. This is what makes it possible to buy an arm separately from the monitor and expect it to fit, rather than needing a monitor-specific mount.

The common trap is monitors, especially ultrawide or curved models, that either lack a VESA pattern entirely or use a larger, nonstandard spacing built into a proprietary stand. In both cases an adapter plate is usually available, but it needs to be checked and often bought separately before assuming a new arm will bolt straight onto an existing screen.