This miner is outdated, like a half a year ago was
Butterfly Labs BFL BitForce 500 GH/s Mini Rig
http://www.coindesk.com/inside-butterfly-labs-the-asic-bitcoin-mining-arms-race/Also, lots of USB cables and USB hubs, like this T-720
Powerful miner ?
My KNC Neptune is produced in October. Requires 2,55kW (only 2 PSU) and mined 4TH/s (6 modules)
It takes several times less space , and is still outdated.
You need to build a time machine to sell this T-720 "Powerful miner"