I have used a car adapter from my 2300c for the 2400c and it works fine. I don't know if you can use the higher capacity ac adapters in reverse, as you mentioned, using a 3400 ac adapter for a 2300c laptop.... I do know from experience that the reverse holds true. Again, do NOT attempt any of this WITHOUT the 2nd generation of ac adapters for the duo, the 1.5 amp instead of the duo 210 and 230 which only supplies 1.04 amps Alan ---------- Duo/2400 List, The friendliest place on the Net! A listserv for users and fans of Mac subportables. FAQ at <http://www.themacintoshguy.com/lists/DuoListFAQ.shtml> Be sure to visit Mac2400! <http://www.sineware.com/mac2400> Dr. Bott LLC | Get a LapBottom with new �GRIPPIER� gripper pads! | http://www.drbott.com/prod/lapbot.html $23.00 Midwest Mac Parts <http://www.midwestmac.com> | After-market parts for Macs. Fix your ticking dock for $59 w/ trade-in of PS. 888-356-1104 PowerBook Guy is | Click here! Everything PowerBook! | http://www.powerbookguy.com
