Does not contain "conflict minerals": tantalum, tin, tungsten, and gold. Y QNAP TS-853BU, NAS, Rack (2U), Intel® Celeron®, J3455, 8 GB, DDR3L QNAP TS-853BU. Type: NAS. Chassis type: Rack (2U). Device class: Small & Medium Business. Processor family: Intel® Celeron®, Processor model: J3455, Processor frequency: 1.5 GHz. Internal memory: 8 GB, Internal memory type: DDR3L. Total installed storage capacity: 48 TB, Installed storage drive type: HDD. Operating system installed: QNAP Turbo System