Psion Organiser II LZ64

The Machine has two connectors at the back which can contain packs (i.e. memories) of 8, 16, 32, 64, 128K in EPROM (Erasable with U.V, called DATAPACK) and 32K in RAM (erasable rampacks electrically, supplied with a pile with lithium). The User could also use packs of 256 or 512K (that is called Flash packs but they are more fragile, less stable and is needed a software interns to control them!