QNAP VS-5012 VioStor NVR 2.5TB. Total storage capacity: 2500 GB, Hard drive capacity: 500 GB, Hard drive interface: Serial ATA II. Memory type: DDRII RAM, Internal memory: 1024 MB, Flash memory: 128 MB. Processor family: Intel Celeron, Processor model: Celeron, Processor clock speed: 1600 MHz. Supported network protocols: HTTP, TCP/IP, SMTP, DHCP, Static IP, DNS, DDNS, FTP, NTP, UPnP, Failover, Load-balancing, Multi-IP. Power requirements: 110-240V AC, 50/60Hz, Power supply: 250 W