3M Lx550 Vertical Notebook 70071208006, Black, Height Adjustment 3, Height Range of Adjustable Segments 3", Cable Management, Adjustable Height, Non-skid, Ergonomic. Raises your laptop to an ergonomically correct height. 3? range of height adjustability helps the user get closer to the screen. Nonskid base prevent slipping or falling off of surface. Cable management for cord control.