This is a Easy CAP 4-Channel 4-Input USB 2.0 DVR Video Capture/Surveillance Dongle, 4 channels video input in one card, the maximum display/recording rate is 25fps under PAL format, and 30fps under NTSC format. 4 screen display modes are available. Multi alarm triggering method: sensor, motion, video loss, and HDD space shortage. Support schedule recording mode, recycling recording method available. MPEG4 video compression format. 5 level recording quality options available, and the recording frame rate range from 1 to 30fps adjustable for each channel. Support multi-channel playback, searching by time/date and recording events, images can be Zoom/capture/save/print/backup.