Memory Expansion Board (250-4030) Features Faxback Doc. # 2026 Adding a Memory Expansion Board (with 1 Meg of memory installed) to your computer significantly increases the memory storage capacity of your computer. Each additional Memory Expansion Board can be added and used as long as the memory on the previous Memory Expansion boards ends on a 1 Meg address boundary. This memory board can range from 512K (.5 MEG) to 2 MEG in 512K increments. (RJS/jlc-03/28/94)