The first expansion for my first ZX81
16K memory expansion produced by Memotech Ltd in the United Kingdom, one of the most respected in the ZX81 ecosystem. It connects to the rear expansion port. Fitted with a 3-position DIP switch allowing the configuration to be adapted to the machine revision. The velcro still present on the casing bears witness to the universal DIY solution against the infamous 'RAM pack wobble'. A piece of personal history — the expansion for my first ZX81.
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