Adding Memory

I have a Dell Dimension 4550 and have a question about upgrading my memory. As it is now I have two slots, one has a 256 stick and the other has a 512 stick. After reading the wimpy manual about adding more memory it says that I can't exceed 1 GB. Now, is that the combined total of the two or is that per slot?

Hello,

You can't exceed 1GB per slot, that's what it means.

Thanks for the sitting me strait. That means I can add 1GB to each slot.