1.Realtime Full D1 DVR recorder 2.16channel Video input,16channel audio 3.3G,WIFI,CD/DVD-RW,HDMI 4.4 ... Ch1~Ch16 CIF(1-25/30FPS) Extra Stream:CIF(1-25/30FPS),QCIF(1-25/30FPS) Image Quality 1-6level(level 6 ... Hard Disk 4 SATA ports(Max 8TB HDD supported),1 DVD RW Space Occupation Audio:28.8MB/H,Video:56- ... RS232 & RS485) 3 USB 2.0 Flash drive(1 for backup,1 for mouse) Network Interface RJ-45 port(10/100M ...