[High-speed silent fan]The notebook computer cooling pad is equipped with two high-speed fans, which provides excellent heat dissipation effect and optimizes the heat dissipation effect of 15.6-17inch notebook computer. Its size is very powerful. Surprisingly, they are only 26dB quiet. You can 't even hear it! [ Carry with you]It weighs only 130 grams, and is one of its lightest radiators. It is completely flat and perfect for transportation in a backpack or briefcase. [Ergonomic Comfortable Cool Pad] Ergonomically set up tripod. The built-in large anti-skid baffle can effectively prevent the notebook computer from sliding down; it can meet different needs when working or playing games, and is comfortable and natural. [Extra USB port] Extra USB port and power switch design. The built-in USB hub allows more USB devices to be connected. Warm reminder: the packaged cable is USB to USB connection. C-type connection devices require a C-type USB adapter. [ design]The contact of the computer radiator and the computer is designed with comfortable materials, which not cause damage to the computer . While protecting, it increases friction and makes it more stable during use. Type: notebook cooler Current: 150mA Voltage: DC5V colour:Black Material:plastic size:32 x 14.5 x 2cm Package Contents: 2 x laptop cooling fan Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.