COMPATIBLE Monitors 21" to 32", With a Maximum Weight of 20 Pounds - The Clamp Grips Counters Maximum Of Up To 3.35" In Thickness Length and Minimum 0.39". SPECIFICATIONS The overall dimensions are 4.6 W x 21.6 D x 17.1H Minimum and maximum height that the monitor can be raised is 6.8 to 17.1 Supports a maximum weight of 19.8 lbs. Accommodates pre-drilled holes with a diameter of 0.39 to 2.3 Mounts on surfaces with a thickness ranging from 0.39 to 3.35 Weighs 7 lbs. & 10 oz. FLEXIBILITY VESA joint allows for portrait or landscape mounting orientation: This mount's VESA connection offers versatility in the tablet's display options by allowing for portrait or landscape mounting position. A broad variety of viewing angles are possible because to the mount's 180-degree flexibility in either the vertical or horizontal planes. CHARGE ON THE GO Mount has two (2) USB ports at the base to allow ultra-portable devic