Do NOT trust this company. They do NOT honourably support customers when something goes wrong.
I have lost $15,000 in BW-L21 miners that would only run intermittently. No warranty was honoured, the Chinese manufacturer claims that their engineers had all left and we were left high and dry after only about 15 LTC had been mined. And this was after waiting months past the promised date for delivery, during which time the coin prices had dropped and tons more miners had come online, pushing profitability down.
Hyperbit, FUCK YOU. Seriously.