Ok, there they are. So they're very finicky. They're not recognized if there's a Block Eruptor plugged in. If there's a BFL SC plugged into the PC they're recognized but do not hash. So they can be the only USB miner connected to a given PC for them to mine.

Does it make any difference if in MuM -S bigpic:all goes in Configure/Miner/Settings/Arguments/SHA-256 or Configure/Miner/Settings/Arguments/Hardware Scan 

My Red BitFurys are not recognized by MuM 3.3.4 BFGMiner 4.7.0. I've tried MuM's Scan Hardware but they don't get picked up. Win7 Device Manager sees all of them, e.g. Bitfury BF1 USB Miner (COM100). Anything I can try? TIA

This is caused by defective 6-pin power connectors installed in S3s.

The problem is that some 6-pin PCIe connectors on your S3 are defective. You need to either move your PSU cables to the second connector on each board or add two more PCIe connectors so you have 4 per S3.

I wonder if the S1 Upgrade Kits will turn out to be a disaster like their so-called DIY S2 Kits 

When can we expect the S4 

Will it have a competent PSU such as a Corsair AX1200 

If not, can it be bought sans the PSU 

I have a dead S3 giving this message. Is there something I can do to fix it 

/usr/lib/lua/luci/dispatcher.lua:448: Failed to execute function dispatcher target for entry '/'.
The called action terminated with an exception:
/usr/lib/lua/luci/sauth.lua:87: Session data invalid!
stack traceback:
   [C]: in function 'assert'
   /usr/lib/lua/luci/dispatcher.lua:448: in function 'dispatch'
   /usr/lib/lua/luci/dispatcher.lua:195: in function </usr/lib/lua/luci/dispatcher.lua:194>

Why an S1 upgrade kit  

The only thing you can use from an S1 is a fan and 2 metal brackets, maybe.

Why does MuM mine SHA-256 with my GPU 

Why won't BFGMiner 4.5 update to 4.6 on some PCs with MuM 3.3.2 

My S3s like 4096