Upgrade IBM PS/2 Model 55 SX 031 Computer Memory

 Memory Specifications
Standard2 MB (removable)
Maximum8 MB on system board / 16 MB with IBM 609 expansion board
Slots2 sockets on system board
CommentsYou may upgrade the system board partially or fully before adding the expansion board; however, when you are using 4MB modules on the system board, both sockets must be populated.
CPU Type16MHz Intel i386SX
Model Comments100MHz FSB

Your IBM PS/2 Model 55 SX 031 can support up to 8 MB on system board / 16 MB with IBM 609 expansion board of memory. For optimal system performance install the maximum amount of memory in each memory socket, this system comes with standard amount of   2 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 IBM PS/2 Model 55 SX 031.