You can read all about the S5+ here https://www.parallelminer.com/product/bitmain-antminer-s5-7-722ths-0-445wgh-28nm-asic-bitcoin-miner-btc/ - This is where I bought it as factory refurbished. I have not used it at all. I did not realize that it didn't come with power cables. Parallelminer sells the power cables as does amazon (even cheaper). Bottomline is I actually had no idea what I was doing. I just wanted to mine bitcoin and was in over my head.