Dahua Technology EVS5048S-R. Video input channels: 320 channels, Internal memory: 4000 MB, Number of users: 128 user(s). Maximum storage capacity: 10 TB, HDD interface: SATA, RAID levels: 0, 1, 5, 6, 10, 50, 60. Ethernet LAN data rates: 10,100,1000 Mbit/s. Product colour: Black. Power consumption (max): 950 W, Power consumption (typical): 175 W, AC input voltage: 100 - 240 V