NVR DS-7604NI-K1/W 4-ch 1U Wi-Fi 4K , 1 - SATA interface Capacity Up to 6 TB capacity for each disk, Rear panel: 2 × USB 2.0, Transmission Speed:300 Mbps, IP Video Input:4-ch,HDMI Output:1-ch, resolution: 1920 × 1080/60Hz,Incoming Bandwidth:50 Mbps,Audio