NVR4Ch. Linux System.H.264 Video High Profile Compression./G711A Audio Compression.16-bit True Color Graphic operation Interface.Video Standards PAL625line,50f/s;NTSC525line,60f/s.Quailty Monitor:D1(720x576),VGA(HD),HDMI:HDVideo Input(IP) 4ch.@960P/8ch@D1(720x576).Video Recording 960P/720P/960H/D1/HD1/CIF/QCIF.Realtime live display up to 4/8Ch.Playback Display up to 1Ch.(960P Mode)/4Ch.(D1 Mode)VGA&HDMI output Resolution 1024x768/1280x720/1280x1024/1440x900/1920x1080.Power supply 12V/2A