A port expander and ROM card reader for the ZX Spectrum computers. - Share Project - PCBWay,Tindie Blog | Super ROM Expansion For The Spectrum!,06200289 Memory Module,DDR4 RDIMM,128GB,288pin,0.68ns,2933000KHz,1.2V,ECC,4Rank(4G*,Tindie Blog | Super ROM Expansion For The Spectrum!,A port expander and ROM card reader for the ZX Spectrum computers. - Share Project - PCBWay