The chipset used in the Dimension 2400 will handle 2 GB per Intel, who makes the chipset. I can't be absolutely certain that the computer will handle 2 GB as I've never put this much in it, but one of my 2400's has been working happily with 1.5 GB for about eight months now. I used Kingston memory, but I'm certain that there are other vendors, such as Crucial, who supply memory that is compatible with the Dimension 2400.
Dell Forum member since 2005
You're right Jack. I borrowed two 1gb sticks and put them in the 2400 and it recognized both of them.
You're quite welcome.