- an optional memory card for the PAL & PAL Jr expansion boxes
- eight 30 pin SIMM sockets for up to 8 MB RAM
- does not conflict with the onboard 1 MB RAM
- accepts 256 kB or 1 MB SIMMs in pairs
- supported configurations are 0.5, 1, 1.5, 2, 4 or 8 MB
- autoconfiguring