In your defense, the short life of storage formats hadn't quite been demonstrated yet... and the picture needs identifiable iconography, since a CD or whatnot wouldn't have quite worked at the time (especially since they were write-only!). Artistic license. That's a perfectly good excuse.
Heh. Well, that *was* my thinking at the time - At a glance, viewers would know EXACTLY what was going down. Ironically though, Shadowrun had 'data sticks', which I thought were a ridiculous concept... and now here I am 20 years later with a fistfull of USB sticks in the house. Go figure.