My 2nd Maplin is a Model B Rev 1.0 Code 3
Delivered earlier this week.
I've also found code to remove the Windows script from my ZTE MF622 3G Dongle and recode it for Linux.
(I've already got the windows backup for the internal flash drive to re-code it for Win as/when required)
I've yet to test it this weekend, but the problem I thought was going to be my biggest hurdle (porting 3G to Pi) was one of the simplest to solve.
If all goes well I should have a fully www-capable PC in the car by the end of the weekend - only the purchase of a 12V cigarette plug to go!
3rd board from RS still nowhere to be seen!
Electronics kit arrived to play with - I might even have to buy a 4th Pi to use with it - I'll go to Farnell/Element14 to ensure speedier delivery.