I used CGMiner 3.1.0, and followed these instructions http://rdmsnippets.com/2013/05/29/setting-up-asicminer-block-erupters-on-windows-7/ except Win7 popped up a "solve problem" box to get the serial port drivers for me.

I also used the -G flag to disable the graphics card, and didn't use the icarus-timings flag.  I might try the auto scan flag later.

I plan to put them on a Raspberry Pi at the weekend as my rig takes 100W with the graphics card idle.

They are getting 333 - 334 Mhash each, and get really hot (at least 60C).  I have a case fan pointed at them ATM, and might build a "wind tunnel" case for them.

All of mine have the black back plate on them.

Bob