IBSound Super-Slim Laptop Cooler Cooling Pad Ultra-Portable and Light Weight with Super Quiet and Powerful Turbo Fans_4 Fan Black Slim, portable, and light weight enable you to take it with you wherever you go 4 ultra-quiet fans create a noise-free environment at the same time perform fast heat dissipation Extra USB port and power switch design. Built-in dual-USB hub allows for connecting more USB devices. The high-quality all metal mesh designed to maximize heat dissipation and ensure the stability of laptop carrying surface. Ergonomic design with two adjustable height settings perfect for laptop up to 15.4 -inch