I've got a Mac 512K that came with two MacSnap devices installed in it. The MacSnap SCSI adapter plugs into the Mac's ROM sockets, and provides a 25-pin SCSI connector out the back of the Mac. The Mac seems to pay no attention to my Zip drive when it is attached to this connector, though, so I guess that it needs some kind of driver? Does anyone have this software? Also, the machine came with 512K on a MacSnap memory board. It looks like there's enough space for 1.5MB on the board. I had to remove the board to get the Mac to boot, however. Even the "Sad Mac" image was garbled with this thing in place. I think it is because two of the connectors are cracked. The MacSnap memory board actually snaps onto the top of existing chips on the motherboard, because there is no "normal" means of expanding the Mac 512K. Does anyone know if the 16-pin "snaps" are standard parts (i.e. AVAILABLE)? These are parts that fit over 16-pin DIPs, with metal contacts that push against the legs of the chips. What would be the proper name for these parts? There are four 20-pin "snaps" and two 16-pin "snaps" on the underside of the memory board, but it is only the 16-pin parts that are cracked. Doug Spence ds_spenc(a)alcor.concordia.ca