Block Erupter 49 Port USB Hub
Used for a month still works great, Ask me about a 30 amp power supply that will run 49 block erupters at once. I will undercut any other online prices you may find. Used for a month still works great, Order this listing and receive a rare PSU FREE that has a 30 amp 5 volt rail which is capable of running 49 block erupters simultaneously!(http://www.newegg.com/Product/Product.aspx?Item=N82E16817139005)