Dear sirs there are two types in the item Type 1 means the standard one Type 2 means the one with heat sink Please purchase according to your needs thank you Features 1 This is a magics laptop desk 360 folding you can use it to enjoy the fun of the Internet in bed sofa table carpet lawn 2 You can used as laptop desk writing desk Sketchpad dinning table Flower Stand etc 3 Made with strong magnesiums and aluminum alloy achieve the high quality and compact design one 4 Installed with two fans shape Ventilation holes which provide strong air flowing to dissipate the heatbottom of your notebook Not only a table but also a cooler 5 Each folding leg has 2 knobs which can adjust any height and angle you need The 360 revolves provides the high flexibility just as human Specification Desktop Material Aluminum Alloy Density Board ABSMain Frame Material High Strength Aluminum Magnesiums AlloyFolding angle range 0 360Adjustable Height range about 1 6 9 4 inch 4 24cmPanel Dimension about 11 8x9 4 inchFolded Dimension about 15 7x9 4x1 6 inchColor Black WhitePackage Included 1x 360 folding laptop desk