Monitor arms will support two 13 - 27 Screens up to 14.3 lbs. Accomodates 75 mm x 75 mm and 100 mm x 100 mm mounting patterns. USB 2.0 and multimedia ports offer convenient way to connect and charge your devices. Swiveling design at screens (180 degrees), center (360 degrees), and base (360 degrees). Cable channels help you maintain tidy, clutter-free workspace. Adjustable desk clamp and grommet mounting systems included. For surfaces 0.5 to 3.3 thick.