Position your notebook or tablet screen at an ergonomically correct height while taking up less desk space than the LX500. Riser has 3 in of vertical adjustability. Cable management feature keeps cords organized. Non-skid base. From the Manufacturer Display Solutions - Notebooks view larger LX550 Vertical Notebook Riser Position your notebook screen at an ergonomically correct height while taking up less desk space. Riser has 3 inches of vertical adjustability and is compatible with most docking stations. Cable management feature keeps cords organized. Features Non-skid base Helps free up desk space Height adjustable