I realize that this is a very old thread, but I now have an MSM board for the older version UNISITE with either 1MB RAM or 8MB RAM on board.
The board plugs in in place of the expansion RAM board that is located under the main board.
MSM boards also available for the 2900 and 3900 series and also for the newer version UNISITE that has the RAM modules on the main board.
Boards are listed on EBAY
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