QNAP TS-464-4G, NAS, Tower, Intel® Celeron®, 4 GB, DDR4, 4 TB QNAP TS-464-4G. Type: NAS. Chassis type: Tower. Device class: Small & Medium Business. Processor family: Intel® Celeron®. Internal memory: 4 GB, Internal memory type: DDR4. Total installed storage capacity: 4 TB, Installed storage drive type: HDD. Operating system installed: QNAP Turbo System