... -450Mb/hourStoreHDD, SD Card, NetworkModeHDD backup,Network backup,USB backup8InterfaceVideo Input4CH BNC,1.0Vp-p,75ΩVideo Output1CH BNC 1.0Vp-p,75Ω,1CH ... output(Support simultaneously output)Audio Input4CH RCA, 200-2800mV,30KΩAudio Output1CH RCA, 200-3000mV,5KΩEthernetRJ-45 port(10M/100M)USB port2 ... (H)Weight2.5kg(without HDD)Daytime Snapshot H.264 4CH Real-time Recording Digital Video Recorder