Thanks to legkodymov.
S5 was based on legkodymov's serial power design, and its power consumption at wall is 0.51W/G.
S2-replace PCB will be released after Chinese Spring Festival, and it will be serial powered too, and its power consumpiton at wall will be less than 0.4W/G.
Thx Bitmain!
Any idea on price for the new S2 PCB?
Ive got 2 S2 just sitting here - finally i can get some use from them! 2.5TH? not shabby
obviously the PCB kit/boards has to be cheap enough - right now the S5 pricing sucks a little bit ($370 still)