Specifications

Memory Laser Printers - 9
Memory Upgrade Notes
You may use 4 MB, 8 MB, or 16 MB DRAM
SIMMs in the LaserWriter Pro printers. All
8 MB SIMMs currently produced are
considered double-sided SIMMs, since they
have memory chips on both sides.
If you have a double-sided SIMM in one
memory bank, the other memory bank must
be left empty. The second memory bank cannot
contain a SIMM. This restriction is inherent
in the design of the LaserWriter Pro I/O
Controller board.
When a double-sided SIMM is installed in
one bank, each side of the SIMM is treated
electrically as an individual bank. Since the
LaserWriter Pro printers can only have two
banks of memory, the second bank is
unusable and you cannot insert a memory
SIMM into it.