What's... THAT?! 
(Feel like I've missed something...)
It looks like stripped USB Block Erupters. (Feel like I've missed something...)
Not quite, the board is different, and also some components (not to mention led color and heat sink!).
A new or old generation of the current design, perhaps?
cheers,
kev
2.5ghz? price? shipping? need more info
x2
