Macintosh Classic I upgraded to 4MB #2

This one i bought in Tilburg, it was non-working/untested.

After a re-cap i tried to start it and it started :- )

Working harddrive of 40MB and 4MB ram.

But during the re-cap i discovered something…

Classic I (v1) vs Classic I (v2)

It contained a little cap..

Which when removed unveils a microphone jack?

Well my guess… Apple ran out of the stock of Classic I housings and didnt want to make more, so they ran Classic II housings with this little plug and a sticker.

Classic II vs Classic I (v2?)

And best of all no battery leakage !