To upgrade your printer with more memory
Your printer comes with a basic memory of 4 MB. In case you need to print particularly large files, the following memory expansion modules are available: 4 MB, 8 MB, 16 MB, and 32 MB. The maximum total memory is 36MB (4 + 32).
File size and memory usage
There is no direct relationship between file size on your computer and memory used in the printer to print that file. In fact, because of file compression (and general complexity) it is often impossible to estimate how much memory will be used. In general, thicker lines (0.5 mm), complex objects (such as polylines), and fills will all use significantly more memory.
A ROM (read-only memory) SIMM (single inline memory module) is a physical module containing read-only data that can be installed in the back of the printer to provide firmware upgrades.