VESA 300 Adapter (Change 200x200 pattern to 300x200 and 300x300) Change 200x200 pattern to 300x100, 300x200, 300x300 Convert your VESA 200 to a VESA 300 bracket It is perfect for upgrading an existing arm mount and is easy to install as well This versatile unit allows monitors of different VESA standards to be set up Item come with 4x Screws, 4x Split Divisor, 4x Flat Washers and 4x Zinc Plated