DVR Card Video Input(s):4CH; Compression:MPEG-4; Support 2000,2003,XP; Software:V8.2,Total 25f/s DVR Card security dvr card digital video recorder cardName: 4CH DVR CardModel: 250B SpecificationInput TypeBNC: BNC Video Input(s)1, 2, 4CamsAudio Input(s)1 ChannelRecording Rate15 fps (NTSC), 12fps (PAL).Display Rate15 fps (NTSC), 12fps (PAL).Video ResolutionNTSC: 720x480, 720x480 de-interlace, 720 x ...