FritzBox cooler - 7490 - Fritz Box Kühler

FritzBox users know that this device gets quite warm. Thats my try to get it a bit colder.

The fan is from ebay:
https://www.ebay.de/itm/263367505392

As the fan is 12V, from USB we just get 5V, the fan spins very slow. But it is enough to cool the box down for about 15-20 degrees, no noise to hear :)

Power gets the fan from an usb port
USB plug:
https://ebay.us/j31IM7

Edit: New versions, so the fan is not covered by the holders anymore, additionally I removed a bit of material fr