2GB Memory Module on System p5 185 (7037-A50)

Hi, Expert.

I have been using System p5 185 (7037-A50) for a month. Today I bought
4 "2GB memory" modules from Memory4Less who explained this memory
modules "
3D-11D329R938-2G" is compatible for 25R8408. And I installed these 4
memory modules on my 7037-A50. But all memory were not detected by my
7037-A50. So what is the problem? If we need anything to do, please
let me know.

Best Regards.

Ryo
.