Fits 10 to 15.6 Laptops: Single universal laptop mount fits most laptops and notebooks 10 to 15.6 and up to 9.9 lbs. The stand uses 75x75mm or 100x100mm VESA patterns and secures to desktops up to 3.1 thick with a heavy-duty C-clamp or grommet Articulation: The adjustable tension arm and mounting bracket offer +90° to -90° tilt, 180° swivel, and 360° rotation. Please Note: The counterbalance arm must have at least 4.4 lbs of weight to work properly