Cooler pad Specifications: Incorporates usb 2.0 by 4 ports hub Extra-quiet cooling fans Keeping your notebook cool and extend the life of your notebook Will protect working area from heat of your notebook Multi-functional incoporated key features for complete versatility Heavy duty design for longer life Power easily supplied via usb plug-and-play connection Reliable, convenient and portable Packaging: 20pcs/ctn, g.W.:20kgs, n.W.:17kgs, dimenson:60*45*42cm