USB miner and risk of fire I wanted to try-out mining from a pool from a raspberry pi. I ended up buying a USB ASIC miner (not sure I can post brand here). It's a bit bigger than a USB drive and mounted with heat sinks and fan. It is connected to a USB hub which is powered separately. I think it draws about 10 watts ( 5v x 2A)
My question is, if I let it turned on all the time, does it have a risk of fire? The electricity in my house is reliable (wires are safe), but I'm concerned about the heat. Or any other risk it starts a fire while I'm sleeping (for now I'm not letting it on when I leave the house).
Am I being paranoid? Any particular recommendation?
Just in case someone is wondering the same, mining from a small 10W USB ASIC miner is not really a fire hazard if you take proper precautions:

let air flow around the device
don't place it near easily flammable material

But as I have experienced, I was on average 5 MH/s which is not going to get me very far.