As a generality, older compact AIOs do not work with two- or four-chip SIMMs. The density per chip is too high for the board's memory management logic. You are best off with 8-chip SIMMs, although 9-chip parity SIMMs from the PC world may work. The Mac simply ignores the ninth chip. I have met 2-chip 4MB SIMMs that worked in a Quadra 700, but that is a much advanced machine compared with the compact AIOs.
If outlay is not a problem for you, why not go straight to this seller for some 16MB SIMMs. You'll not get them cheaper elsewhere, and the SE/30 won't know itself with at least 64MB (and Mode32, or Mode32 7.5 if you use System 7.5).
de
Afterthought. This may be PBO, but your posts read as if you are not aware that SIMMs must be installed to fill a bank with four identical cards.
If outlay is not a problem for you, why not go straight to this seller for some 16MB SIMMs. You'll not get them cheaper elsewhere, and the SE/30 won't know itself with at least 64MB (and Mode32, or Mode32 7.5 if you use System 7.5).
de
Afterthought. This may be PBO, but your posts read as if you are not aware that SIMMs must be installed to fill a bank with four identical cards.