Lucky you ... you have the wrong memory.  The PE2800 supports only Registered ECC memory (unbuffered is not supported).  <ADMIN NOTE: Broken link has been removed from this post by Dell>  
Hello, I have a Dell PowerEdge 2800 rack-mount system which I acquired three days ago, and it is giving me some trouble.I get a beep code 1-3-2, which from the manual signals that I have no RAM installed. I'm new to server management, but I have installed 4GB of DDR2 (2x2GB) in the DIMM_1b and DIMM_1a slots on the system board. I tried disconnecting all power after that, waiting a couple hours, then when I came back to it, I reconnected the power and tried to boot again. Being that I had the cover open, of course it gave me an intrusion warning, but I ignored that. I currently have it in low-power identification mode. The LCD flashes blue with the identity scrolling across. If you need any more information, or have any ideas as to how I can resolve this issue without having to replace the system board, as I can't afford a new one (or even a refurbished one probably), please feel free to reply.From what I've seen regarding this issue, it could be that either the board or the DIMM_1b slot is bad. If either of these are the case, I'm [] - I'd have an 80lb piece of paperweight on my desk. Personally, I believe that the DIMM_1b slot being essential to the system's functionality is a bit... counterproductive. I hope to [] that it's not my board or DIMM_1b, and that I'm doing something wrong.Either way, if you have any ideas or need any more info, please let me know.-Nick
PowerEdge 2800 1-3-2 Beep on POST