Quote from: BitmainWarranty on March 11, 2015, 12:12:10 PM

we are listening and taking info but R&D team is working to make it happen as much as they reasonably can...

S2 upgrade kit uses more chips than S5, but it is the same chip BM1834.

PSU wise, original 1000W PSU should be more than sufficient. (That is the plan) Even the slightly under-performing S2 PSU that could hash 9 PCB but not 10, would work as well.

lets wait for the R&D to say, let it open the flood gate for the sale

These are the S2 upgrade kit hashing PCB displayed in Burin, Germany and Amsterdam, Netherlands last week.

Can you tell us about the controller? Will the factory S2 controller work for the upgrade, and will you have controllers available for anyone who has some that are faulty?