Converts common VESA patterns and sizes: The HumanCentric VESA mount adapter can convert to the following VESA pattern sizes: 50 x 50 mm, 75 x 75 mm, 100 x 100 mm, and 200 x 200 mm. VESA conversion plate kit: This VESA mount conversion adapter plate for TV and screen mounts allows you to convert from one VESA pattern to another to connect VESA mounts and TVs that are otherwise incompatible.
eBay