... Loop Out Optional. Support 4 X SATA2.6 2TB HDD, Strong Storage Capacity for 4 Months Recording Digital Watermark for Video ... , RCAOUTPUT1CH,RCATALK BACKYESCONTROLMOUSE2*USB2.0IR CONTROLLERYESSTORAGEBUILD IN INTERFACESATA 2.6 *4(4*HDD 2TB )DISPLAYDIVISION1, 4, 8, 9ZOOMPreview and Playback ... 8CH)SPEEDNormal,Slow&FF(1/4,1/3,1/2,1,2*,3*,4*)SEARCH METHODTime, Event, Channels and CalendarCOMMUNICATIONREMOTE ...