EzCAP3104B 4 CHANNEL USB2.0 DVR is ... record modeRecycling record modeP.T.Z control functionUsers managementMulti-channel displaySupport 320x240 / 640x480 (NTSC), 352x288 / 704x576 ... (PAL) standard resolutions.Image color adjustable for each channel, including contrast, lightness, hue and saturation.MPEG4 ... 0 or aboveOne available USB 2.0 portPacking contents: 4 channel USB2.0 DVR,USB DVR,DVR,Cheap DVR ...