Just because I am actually testing the bus expanders, I have discovered one more perturbing error on my second Enterprise.
I already found
other error on the rear connectors of the same unit some time back.
Observe these pictures:
You can realize that the cut of the board is displaced at least a milimeter to the rear in this unit. In the past this prevented the correct operation of the Bridge connector+Hardware Spectrum emulator on this Computer, but then I used to think that it was by other causes, because some times it worked flawlesly(it touched correctly the pins).
The solution is easy, the bus expander for this unit has to be trimmed at the sides to adapt it to the error. But then it will no longer be interchangeable...
Sorry, bad pictures...
