Acorn
Network Computer
Yes, that's the idea - matching holes for the pins in the card slot of the NC. I now realise, of course, that the NC slot might well take something along the lines of a compact flash memory card, which might actually make the NC do something useful like be able to save something after you switch it off. I didn't know about compact flash in March 2009, as this was pre-Byte Back, where I bought my first Compact Flash Hard Drive, so instead I had to improvise.