The laptop tray attaches to your compatible monitor mount using VESA 75x75mm or 100x100mm patterns. It adjusts from 9.5 inch to 16.5 inches and supports laptops 10 inch to 15.6 inch up to 9.9 lbs. Soft pads, blockers, and ventilation slots keep your device secure and cool. The tray moves with your mount arm, raising your laptop to an ergonomic viewing height.