At 3:13 PM -0400 4/4/05, Ernie Forcadilla wrote: >I have 2 PB280c and 2 PB280 and 5 PB2300c and I have switched RAM >between them. I have only maximum RAM which is 56 RAM for 2 of my 5 >PB2300c and 2 of PB280's. It depends on the available RAM your memory >chips have since both duos have only one unique socket. Some memory >chips have a "piggy back" memory combination wherein you can >maximized your PowerBook duo's RAM using just one chip in the socket. My point was that I've switched a RAM module from a 280c to a 2300 (or was it the other way, it's been a while), and only got half the RAM showing on the second machine. BTW, I have one of those piggyback RAM modules in a machine and wondered where one could get a module to plug into it. Any ideas? TIA. Paul Nelson