Oki LED Printer User Manual page 6

To install the following options, a Memory Expansion
Board or RS-232C Serial Interface Board must be
installed.
Flash Memory SIMM 4MB (Part# 70032601)
Flash Memory SIMM 8MB (Part# 70033201)
4MB Memory SIMM Chip (Part# 70028801)
8MB Memory SIMM Chip (Part# 70033801)
16MB Memory SIMM Chip (Part# 70033901)
32MB Memory SIMM Chip (Part# 70034001)
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