I was cool looking for a way my cable receivers, because this was when you connect an external storage. HDD very hot, which then led to the shutdown of the device. After a stress test of 150 minutes, which would not have survived the receiver without cooling, I could now measure a temp. Of 24.5 degrees. Since you can loop through the USB signal, you also requires no additional port and the pad will only run when the receiver is on. For my purpose, and a price of less than 6 incl. Postage absolutely perfect, my laptop I would not but so cool, for smaller netbook's sure it was going too.