I have a 2011 Raspberry Pi, and after much searching on the internet I cannot seem to find the specs for it. Does anyone have any idea what the main difference between a prototype 2011 Raspberry Pi and a model B Raspberry Pi is?

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    Note that the fact that it says 2011 on the top of the board does not mean it was made then. – goldilocks Jan 4 '15 at 15:03

http://elinux.org/RPi_HardwareHistory lists the revisions of the model B. You can tell which production model of the B you have by counting the number of holes.

No holes - early model B
Two holes - later model B
Four holes - B+
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The Raspberry model B (The first one) had only 256 MB of ram instead 512, but the same processor as the second, and it was without mounting holes.

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