hm, I wonder what modules actually are good candidates for upgrading up to max 128MB
So far I had three different ones, two were 16 MB and one 32 MB..
they didnt look alike, they used different platines and different sets of ICs and RAM chips.
backs look differently but NO one has chips on the back, just on the front.
16MB, fully populated but older RAM type, 28 pin, platine reads PB3400/32.
I also had two 16 MB ones with only four RAM chips on it.
32 MB, platine reads 3400/128 but only eight RAM chips (newer chip type 50 pin)
this is the one I hve currently in my 3400, though the printing says 3400/128MB theres only space for 16 chips and this maybe could be popuated to 64MB (but not 128MB)
these seem to be 64MB ones
then the alleged 128MB one with 4 controller chips instead of four, but these all have the newer chip type.
the platines seem to be just blanks with the basic model type they were produced for and even those were populated differently .