The AC-AP-4040 Adaptor Plate enables attachment of a display with mounting hole patterns up to 400x400m to an Atdec mount with 200x200mm VESA support. Note: The use of this adaptor may limit the amount of tilt and pan adjustment possible with some wall mounts. Supports displays with the following hole patterns (mm); - 200 x 300; 200 x 400 - 300 x 200; 300 x 300; 300 x 400 - 400 x 200; 400 x 300; 400 x 400