We then used a multimeter to find a 12v power. I had a 80mm blue led fan laying around from a computer build. We cut, soldered, and mount the fan onto the case.
It has almost been a full year and this thing hasn't failed yet. It is also quite cool too. I recently cleaned it, and dremeled some more holes at the bottom to increase the air flow so it doesn't fill with dust anymore.
After a while the router was struggling from over usage. There are 4 people in my house that are heavy Internet users and this little guy couldn't handle the load. We had to constantly reset it. We have since upgraded to using a tower with pfsense on it. The Rosewill router is used for dedicated wireless now.