QNAP TS-853U-RP, NAS, Rack (2U), Intel® Celeron®, 4 GB, DDR3L, 32 TB QNAP TS-853U-RP. Type: NAS. Chassis type: Rack (2U). Device class: Small & Medium Business. Processor family: Intel® Celeron®, Processor frequency: 2 GHz. Internal memory: 4 GB, Internal memory type: DDR3L. Total installed storage capacity: 32 TB, Installed storage drive type: HDD. Operating system installed: QNAP Turbo System