Keep your laptop cool with this Adjustable Aluminum Riser Cooling Stand from Monoprice! This stand has an aluminum mounting surface, which combines with the two 70 mm cooling fans to help dissipate damaging heat away from your laptop or notebook computer. The stand can be adjusted to six different angles for optimum positioning of the screen when working at a desk. The mounting surface measures 12 3/4" wide by 11 3/32" deep. A small lip with a rubber bumper at the front of the stand helps prevent the laptop from slipping off the mounting surface at the higher angles. A built-in 4-port USB hub is positioned on the left side of the stand. The fans and hub are powered by USB power via the 23" USB A male to mini-B male cable that is included with the stand. A switch on the hub turns the fans on or off and a blue LED indicates when USB power is applied.