Hey Imex-Erik,
I am wondering about visual differences between Taigen MFU's?

Example, I have several MFU's due to collecting many, many, tanks over the past few years and I have "upgraded" most to aftermarket boards for our local club IR battles (Tamiya).

I have MFU's without openings on the back case. With an opening on the back case and with an opening with a chip visible (sized for the opening). Versions with a large red antenna cable?, but no 6 channel receiver connections, Fan wires inside vs outside, etc...
Do you have a way of quickly identifying the differences between them? Are they just iterations? Aka V1.0, V1.1?
I can provide images if necessary...