Sets up your workspace to suit your ergonomic needs and work style Adjustable Height: Yes. Monitor Size Compatibilty: All Sizes weighing up to 40lbs.. Product Type: Monitor Arm. Weight Capacity: 40 lbs.. Keyboard Storage: Yes. VESA Compliant Mount: No. Adjusts to three different heights from 2.5" - 4.5" to maximize viewing comfort . Includes mini sorter and accessory tray . Slick-Slide mat stows laptop and / or docking station under to shelf . Supports flat panel monitors up to 21" or 40lbs. . Includes cord management and power strip mount