Model DS-7104NI-SL DS-7108NI-SL Video/Audio input IP video input 4-ch 8-ch Two-way audio input 1-ch, RCA (2.0 Vp-p, 1kΩ) Network Incoming bandwidth 20Mbps 40Mbps Outgoing bandwidth 40Mbps Remote connection 128 Video/Audio output Recording resolution 5MP/3MP/1080p/UXGA/720p/VGA/4CIF/DCIF/2CIF/CIF/QCIF HDMI/VGA output 1-ch, resolution: 1920 × 1080P /60Hz, 1600 × 1200 /60Hz, 1280 × 1024 /60Hz, 1280 × 720 /60Hz, 1024 × 768 /60Hz Audio output 1-ch, RCA (Linear, 1kΩ) Playback resolution 5MP /3MP /1080P /UXGA /720P /VGA /4CIF /DCIF /2CIF /CIF /QCIF Synchronous playback 4-ch, 720P / 2-ch, 1080P / 1-ch, 5MP 8-ch, 4CIF /4-ch, 720P / 2-ch, 1080P / 1-ch, 5MP Hard disk SATA 1 SATA interface for 1 HDD Capacity Up to 4TB for each disk External interface Network interface 1 RJ-45 10 /100 Mbps self-adaptive Ethernet interface USB interface 2 × USB 2.0 Others Power supply 12VDC Consumption ≤ 15 W (without hard disk) Working temperature -10 ºC ~ +55 ºC Working humidity 10 % ~ 90 % Chassis 1U chassis Dimensions (W × D × H) 200 × 200 × 45 mm Weight ≤ 1 Kg ( without hard disk)