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Simtec 4MB RAM Upgrade for A3020 & A4000

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 Simtec A3020 2MB Extra RAM

Simtec 2MB Extra RAM for A3020 & A4000

Simtec 4MB RAM Upgrade 

Simtec 2MB Extra RAM fitted in an A4000

This upgrades an A3020 or A4000 (or A4) from 2MB to 4MB. In the picture above the 4 little vertical circuit boards are the upgrade. An A4000 with the Universal Boot installed, needs 4MB to support an Ethernet card, without really limiting the other features

The Simtec 2MB Extra RAM Install  describes how to fit it.