Dell Memory Errors with BIOS USB Support

My 2550 Dell Server was displaying memory errors. It would split the amount of memory available and errors would be produced in the Windows Memory Diagnostic utility starting with the MATS+ test. It also mentioned something about an invalid NVRAM configuration in the startup messages. Dell Diagnostic utility was not helpful. I started disabling all options in the Integrated devices section of the BIOS. I found that by disabling BIOS USB support, the memory errors went away. Go figure!