My 128K Mac (upgraded to a Plus). Actually, it was my wife's computer before we got married. I was in grad school at the time ('91). We owned an SE, and we figured that we didn't need two machines. Given that the SE was more "expandable," we stuck with it and sold the the 128K/Plus. We kept that SE for 7 more years, btw. I used it as a luggable on some of my research trips. Never did end up using the slot.