Odd sized Pro Micro that's too wide
There are black Pro Micro's on eBay and AliExpress that are a different size than the
normal Pro Micro. This makes it incompatible with any PCB designed for a normal Pro Micro. It's has the same pinout and the same circuitry, but will not fit.
And yet another weird Pro Micro here.
The top of the fat Pro Micro. It is 0.1" wider than a normal Pro Micro. The only good thing is the type of Micro USB connector it uses has feet that fit into the PCB. It should be much harder to break the USB connector off.
Bottom of the fat Pro Micro is flat. You can see the holes that the USB connector fits into.
On the left is a
normal size black Pro Micro, compatible with the common cheap blue ones. On the right is the fat Pro Micro. They both use the larger version of the AtMega32U4.
Side by side comparison. Normal black Pro Micro, fat Pro Micro, Pro Micro with Mini USB connector.
End to end comparison.
