Like the Macintosh IIx, the Macintosh SE/30 contains two banks of SIMM
sockets, Bank A and Bank B. Each bank holds four SIMM strips. Due to
space restrictions inside the case, Bank B can only use the PLCC/SOJ
(low-profile) SIMM strips.
WARNING
If you use DIP (tall) SIMM strips you will have problems with the logic
board touching the lower case. This may cause the logic board to short
out. DO NOT USE TALL SIMM STRIPS IN BANK B.
The following are valid memory configurations:
1MB - Bank A 4 256K SIMMs
Bank B Empty
2MB - Bank A 4 256K SIMMs
Bank B 4 256K SIMMs low-profile
4MB - Bank A 4 1MB SIMMs
Bank B Empty
5MB - Bank A 4 1MB SIMMs
Bank B 4 256K SIMMs low-profile
8MB - Bank A 4 1MB SIMMs
Bank B 4 1MB SIMMs low-profile