On Apr 30, 2006, at 2:50 PM, Philip J Robar wrote: Also from the manual: "Maximum number of 16 memory devices on DIMM". As I said in my earlier post you have most likely purchased memory that is too high a density for this machine. But, as others have suggested, you should check to ensure that the new memory is seated correctly before returning it as incompatible. Phil -- "I distrust those people who know so well what God wants them to do because I notice it always coincides with their own desires." -- Susan B. Anthony