This item, 811391-001, is the HP spare number for the product described as SPS-SSD 512GB M2 SATA-3

HP SPARE NUMBER : 811391-001

HP PART NUMBER : 769996-001

30 day warranty. 

Our stock is Certified Genuine HP/HPE Stock or Replacement parts.. Here at Server Surplus, we have counterfeit goods practices in place, meaning that every part we send out has been passed by our quality control and engineering team.