Upgrade Apple Macintosh IIsi Computer Memory

 Memory Specifications
Standard1 MB (non-removable) + 1, 2 or 4 MB (removable)
Maximum65 MB
Slots4 sockets (1 bank of 4)
CommentsDepending on the date of purchase, the MAC IIsi came standard with either 2MB, 3MB, or 5MB of memory. There are four sockets on the system board, all of which are occupied with standard memory modules. Any upgrade involves replacing these.
CPU Type20MHz Motorola 68030
Model Comments667MHz FSB

Your Apple Macintosh IIsi can support up to 65 MB of memory. For optimal system performance install the maximum amount of memory in each memory socket, this system comes with standard amount of   1 MB (non-removable) + 1, 2 or 4 MB (removable) RAM. One or more of the sockets in the system might be already filled with memory. Whenever you upgrade, you can either add memory to one of the open sockets and/or remove memory from a filled socket and replace it with a higher capacity memory module. Select your Memory Upgrade for Apple Macintosh IIsi.