Compatibility: Fits one laptop or notebook up to 17” and supports weight up to 22lbs. Mount plates detachable and height adjustable. Dual mounting options for a laptop or a monitor with mounting holes 75x75mm and 100x100mm. Multiple Options: The C-clamp is for 0.4”-4” thick desk and Grommet is for 0.4”-2.2” thick desk. Multiple Adjustment: The high-grade arms extend, retract and are easily adjustable on a 16” height pole, +/-15° tilt, +/-90° swivel and 360° rotate to change reading angles. Design: Vented holes on laptop tray absorb cooling air from laptop fan. Tray measure 14 x 11inch (L x W), with a 0.6” protruding bottom lip. Package Includes: 1 x WALI Laptop Tray Desk Mount (White), 1 x Mounting Hardware Kit, 1 x User Manual, experienced and friendly US based customer support available to assist 7 days a week.