When choosing a TV wall mount, you first need to ensure you're selecting a mount that can accommodate the size and weight of the TV. You should consult the UL safety rating of the TV mount, which should be on the mount's box. Make sure to include the weight of the TV mount itself in your calculations for weight capacity, because if the mount you have chosen is only rated to support the weight of the TV, then the mount won't be able to support the total weight of the system.
You also want to ensure that the mount you choose matches up and fits the size of the TV you're installing. For this, you’ll want to match the VESA pattern size of the TV with that of the TV mount. VESA (Video Electronics Standards Association) mounting patterns refer to the standardized layout of mounting holes on the back of the TV. Understanding and matching these patterns with the mount ensures compatibility. This standardization also facilitates easy interchangeability of mounts and TVs, providing flexibility for upgrades or replacements.