... 3. support 7 HDD 4. 120 fps (1920x1080) 1080P H.264 real time 4ch HD-SDi cctv dvr 4 channel ... 720P(25/30,50/60) HD-SDI video inputs H.264 dual-stream video compression 4channel@1080P realtime recording HDMI ... )USB2 x USB 2.0Dimension ( mm )442(w)x92(h)x438(d)Weight ( w/o HDD/DVD±RW )5 ... /4, 1/8), FF(4, 8, 16, 32), REW(4, 8, 16, 32), Frame Step, Seek BarDeviceInt. HDD, eSATANetworkNetwork Interface10/100 ...