QNAP TS-509 Pro. Total storage capacity: 0 GB, Hard drive capacity: 0 GB, Hard drive interface: Serial ATA II. Memory type: DDR2, Internal memory: 1024 MB, Flash memory: 128 MB. Processor model: Celeron, Processor clock speed: 1600 MHz. Power requirements: 100-240V, 50/60Hz, Power consumption (typical): 63 W. Weight: 6.4 kg