Truthfully, I am not an IT savvy person.  I picked this up at an overstock sale and it appears to be a return. Nothing appears to be broken or missing.  

Sticker reads:

Brand:  Hewlett Packard Enterprise

Model: MB4000JEXYA

Manufacturer: Toshiba

Mfg Model No. HDEPF12CAA51

DESCRIPTION:. 4TB, 12 Gb/s, SAS, 3.5" LFF, 512 block size

Manufactured in Philippines

Used/Like new condition

HPE ProLiant Gen 8 / Gen 9 Compatible