It is not a validated configuration, that is correct.   Validated R12 memory configurations 
Just ordered an Aurora R12 and the memory specification is as follows: 16GB, 2x8GB, DDR4, 3200MHz, XMP Am I reading it right that it will not support a 32GB in a 4x8GB configuration? Seems strange that Dell would do a configuration like this with two open spots that are unusable unless all the ram is replaced.
Aurora R12, ram configuration, no 4x8GB?