Yep, this is correct. The memory, storage, Input Cover, and Bezel are "turn parts" that temporarily carry along the manufacturing line on each DIY Edition unit so that the system can go through the full set of manual and automated testing and quality control. The modules you receive in a DIY Edition shipment are actually totally separate modules specific to your order that are also independently tested and packed out, and are dropped into the box when the order is being shipped out of the warehouse.
