1. 4 channel HD-SDI 1080P input 2. H.264, ... max, 6 SATA devices(HDD*4+eSATA*1,HDD*4+DVD*1,HDD*4+DVD*1+eSATA*1)External HDDYES ... source220WDisplay Speed 1080P/720P 120FPSSplit screen 1.4.SEQ Auto channel switchingSwitching time 1-99secMode zoom(digital X2- ... panelTouch panel LCD monitorRemote controlIR Remote control max 4 deviceSystems upgradeVIA USB/networkPan ,tilt,zoom,controlControl form ...