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.Two double articulating arms provide completely independent adjustment for each screen, with wide range of motion for effortless, precise and comfortable screen positioning/viewing.Motion assist allows user to move monitors to ideal position at ease.Adjustable height from 8.58-18.43 inches.