IF we go by numbers ;-) 2400 comes right after 2300 or rather the logical next step for the Sub Notebook Duo Models.... Sadly the 2400 was the end of the Line. Apple just needed to hang in there and do a little tweaking / upgrading for that line of books rather than follow BIG is better (PowerBooks got BIG fat and weighed alot just like the PC counter parts) Some of us went smaller (SonyVaio Super Slim) cause we got tired of lugging those fat heavy Lombards, Wallstreets, Pismo..... Oh and the clam shells...Cute .....loved those buggers, very easy to gut and work on! Brandy ----- Original Message ----- From: "Goodwin, Greg P." <GoodwinG at aafes.com> To: "A place to discuss Apple's sub-portable computers." <duolist at listserver.themacintoshguy.com> Sent: Wednesday, April 13, 2005 12:58 PM Subject: RE: [DuoList] can't install OS 9. Sorry Brandy, I was simply asking something that I have wondered for a while now. When I hear about all the issues of the 2400, and the issues of the Duo 210-2300, they are quite different.