Specifications

Memory Laser Printers - 13
LaserWriter
12/640 PS
The LaserWriter 12/640 PS
controller board has no
soldered DRAM but ships with
one 4 MB DRAM SIMM. You
can expand the memory to a
total of 64 MB.
Slot C/D Slot A/B
I/O Controller Board
Note: To use the duplex printing option OR
to turn on PhotoGrade, you need a minimum
of 12 MB of DRAM. To use both options at the
same time, you need a minimum of 20 MB of
DRAM (or 24 MB if using legal size paper).
Memory Information
DRAM Speed 70 ns or faster
SIMM Type 72-pin
Soldered DRAM None
Expansion Sockets 2
Supported Sizes in MB 4, 8, 16, 32
Maximum RAM 64 MB
DRAM Configurations
Total DRAM Bank C/D Bank A/B
4 MB Empty 4 MB
8 MB 4 MB 4 MB
8 MB Empty 8 MB
12 MB 4 MB 8 MB
12 MB 8 MB 4 MB
16 MB 8 MB 8 MB
16 MB 0 MB 16 MB
20 MB 4 MB 16 MB
24 MB 8 MB 16 MB
32 MB 16MB 16 MB
32 MB Empty 32 MB
36 MB 4 MB 32 MB
40 MB 8 MB 32 MB
48 MB 16 MB 32 MB
48 MB 32 MB 16 MB
64 MB 32 MB 32 MB