QNAP TS-863XU, NAS, Rack (2U), AMD G, GX-420MC, 4 GB, DDR3L QNAP TS-863XU. Type: NAS. Chassis type: Rack (2U). Device class: Small & Medium Business. Processor family: AMD G, Processor model: GX-420MC, Processor frequency: 2 GHz. Internal memory: 4 GB, Internal memory type: DDR3L. Total installed storage capacity: 8 TB, Installed storage drive type: HDD. Operating system installed: QNAP Turbo System