ZX Spectrum Backplane, Card Frame & Modular Expansion Systems | Mister Spectrum
Expansion Systems (i) Backplane expansion Features Original Price Velleman Interface System <strong>Motherboard</strong> (K2616) provides space for up to 4 interfaces cards.Interface Cards for <strong>Motherboard</strong> are as follows:K609 - DC output board with 8 open collector outputs (25V / 50mA) K2610 - A/D convertor, 8 bit precision K2611 - 8 optocoupler inputs ...