With regard to the RAM cards, it is my understand that all that are for the Duos will work in any Duo, but that some of the earlier Duo will not "see" all the memory on the larger cards. For example, I have a 20 MB card advertised on eBay as having been pulled from a 2300 in my 270c, & it works fine, for a total of 24. However, I am told by reputable authorities, including Apple, that if I put a 32 MB card I will only get 32 MB total, as the RAM controller will then fail to "see" the 4 MB on the motherboard. Apparently the controller (or maybe it's a ROM issue) was not programmed to see a total of 36 MB. But the 2300 mobo can see up to 40 MB. So you have nothing to fear if you upgrade to a 2300. -- Over, Jutso http://pages.ripco.net/~jutso/ On Sat, 3 Apr 2004, Duo/2400 List wrote: > From: COCCORP at aol.com > Message-ID: <1ee.1d063139.2d9f8175 at aol.com> > Date: Fri, 2 Apr 2004 21:54:45 EST > Subject: [Duo2400] Re: 280c upgrade path? > > [...] > > The 2300c can take your 280's SCSI Hds. And most likely the RAM too. I think > some of the early Duos cannot use the 280s and the 2300s RAM... > > Craig W. >