PM Enterprises

Dynamic RAM (16kx1) for making a 16K RAM expansion.

Many vendors sold ZX80/ZX81/TS 1000 compatible edge connectors in solder-tail and wire-wrap versions. The wire-wrap connector could be used with a small printed circuit board to build a feed-through device that would allow for connecting another expansion unit.

Expansion RAM pack.

48K expansion memory; with power supply.