Increase comfort & productivity by placing your keyboard & mouse at a proper level. This keyboard has an easy adjust arm which allows height adjustments of 4" above & 6" below mounting surface just by tilting the platform. Tilt is adjusted by dialing tilt knob to desired angle. Standard all-in-one platform with wooden construction minimizes bouncing. Includes all-in-one leatherette gel wrist rest with antimicrobial product protection & Precise Mouse Pad that can be placed on right or left of keyboard. Workstation Type: 90 Corner; Curved; Diagonal; Straight; Sit-to-Stand Option: No; Weight Capacity: 70 lb; Height (+/- Desktop): +0" Above to -6" Below.