I bought the one from
here.
Here's how it looks inside:
I've labeled some of the components, in the pictures.
The values of the resistors, in KOhms, are the following:
R1: 0.680, R2: 470, R3: 0.680, R4: 470, R5: 0.680, R6: 470, R7: 10, R8: 32, R9: 3.3, R10: 27, R11: 100, R12: 10, R13: 3.3, R14: 0.56
R1-R6 are 0.1%, R7-R14 are 1%.
The ESR values of the Rubycon electrolitics (16V, 10uF) are 4.3 and 4.7 Ohms. They're high, but could be normal, according to some ESR charts. I couldn't find any official Rubycon documentation with ESR values.
The version of the board is 2.10 from 2013.06.20. Which seems rather odd, since 2.10 is an old version. I think I've seen a board labeled v2.10 with a 2012 date on it. There are also boards labeled v2.2, v2.4 and v3.0. So did they use an old hardware layout and slapped a 2013 date on it? I'll have to look more into it.
Anyway, it lacks an ISP header (not a problem) and the 2.5 volt reference. Anything else you notice?
I haven't properly tested yet, I'm a beginner and I don't have many components lying around.