Unique system keeps keyboard and mouse in position during adjustment or storage of trays. Independent mouse platform is height and tilt adjustable and can be mounted right or left. Patented leatherette gel wrist rests for keyboard and mouse; Preciseâ„¢ optical mousing surface. Cord management. Center-mount extended arm provides excellent knee clearance and fine-tune adjustability; ideal for corner workstations. Lever-free height adjustment within 6"/-4" range. +10/-15Â° tilt and 360Â° swivel.