Before you two motherboards: RevoPlus, you can see above, and Revo Classic (below). They look like, is not it?
Motherboard Revo Classic, an image that you see - one of the earliest versions, she uses to reflash the flash-memory (suddenly employees Psion mistake :-)). Later, when production has reached full capacity, flash-memory chip has been replaced nepereproshivaemym (Masked Rom). Normal motherboard Revo Classic is more like a Revo Plus, thanks to this change. The most obvious difference is the Revo Plus another 8 MB EDO RAM.
REVO CLASSIC