<Quite a few of my machines -- including one PC-compatible and a couple of <Sparcs -- have 30-pin 4MB SIMMs. They're fairly common. For some reason here in the Boston metrowest area 4mb 30 pin simms are scarce and don't go cheap. That and most 386/486 boards want 4x of each and even at $11 that makes a 16mb ram in a 486 using 30pin more expnsive here that a 16mb (and 32mb on sale) of the 72 pin simms. Allison