Synology NVR1218. Video input channels: 12 channels, Maximum resolution: 2591 x 1944 pixels, Supported resolutions: 1280x720, 1920×1080, 2048x1536, 2591x1944. Maximum storage capacity: 20 TB, HDD interface: Serial ATA, HDD size: 3.5". LED indicators: HDD, LAN, Power, Status, Product colour: Black, Certification: FCC B, CE B, BSMI B. Processor frequency: 1 GHz. Power consumption (typical): 13.64 W, AC input voltage: 100 - 240 V, AC input frequency: 50 - 60 Hz