Pro-series laptop workstation, nine angle height adjustment, integrated 4 Port 2.0 USB hub, in-line clips. Raises your laptop screen to a comfortable viewing height and angle. Features intuitive nine angle height adjustment 85mm - 245mm. Includes integrated 4 Port 2.0 USB Hub. In-line clips hold documents in place. Stylish air vents aid hardware cooling. Sturdy and compact metal construction. Compact design folds almost flat.