Our unit shipped in the display box without a double box package.
The package held up well to the shipping company's abuse.
Inside we found a NAS that was packaged well with dense, closed cell foam keeping the NAS safe. The foam kept the NAS in the middle of the package and the corners of the NAS well protected from accidents.
The accessory package is fairly tame. We received a paper manual, software disk, power cable, screws for installing 2.5" SSDs/HDDs, and a single, shielded network cable.