VESA is the industry standard for the hole spacing on the back of the screen that the mounts fix too. The standards are usually, 75mm x 75mm, 100mm x 100mm, 200mm x 100mm, 200mm x 200mm, 400mm x 200mm,400mm x 400mm, 600mm x 400mm and 800mm x 600mm VESA hole spacing, and almost all monitors available on the market conform to these standards. All our monitors are easy to install and come with full instructions and if you require additional assistance please don’t hesitate to call our helpline.