QNAP TS-433-4G, NAS, Tower, ARM, Cortex-A55, 4 GB, 0 TB QNAP TS-433-4G. Type: NAS. Chassis type: Tower. Device class: Home & Home Office. Processor family: ARM, Processor model: Cortex-A55, Processor frequency: 2 GHz. Internal memory: 4 GB. Total installed storage capacity: 0 TB. Operating system installed: QNAP Turbo System