Coolerguys Dual 80mm USB Cooling Fans
To use these fans you will need access to a USB port, the fan will switch on when the device is powered.
It's been tested and will work with popular devices like Cable & Satellite Boxes as well as most common game consoles like Xbox One or Playstation 4.
Also it's a great addition to a closed computer cabinet so you can exhaust the hot air that is created by the computer whenever it is powered on.
They come with rubber feet to stick on the bottom of fans to prevent scratches and movement when placed on top of a device and a wire grill to keep fingers and any stray wires from getting into the fan blades.
(2) 80x80x25mm fans powered from 1 USB plug
(8) rubber stick-on feet
(1) Black wire finger grill
Rated Voltage: 5 Volts
Tail: 16 inch /Dual
RPM: 1550 +/- 10%
Bearing: Dual Ball Bearing