They are USB Block Eruptors 333.6Mh/s Rev3.0, I eventually want to get 5 Ant miners, there was a Ant miner sell on ebay but when the intventory begin to run out the seller upped the price from $60 USD to $80USD and I couldn't get it when I was finally to have some of the cash. The only one I got lucky with was a Lot of 3 USB Block Erupters for around $50 USD.
The Power Supply that I am using can handle 5 USB Devices alone. it is from a old Linksys Wireless B 5V 2.5A
So does that heat tunnel work?
Yup it keeps them cool Very well. They don't get Hot At all. Also with this I can always make the tower bigger for more USB hubs and more USB ASICs. The Reason why I am started with Block Eruptor Asic Miners is they are Cheap to get for now to get because I can't afford to much with cash, For most of the mining that I have done before I was stuck with CPU Mining and 1 GPU on my Gaming Rig.