System Main Processor?Quad-core embedded processor Operating System?Embedded LINUX Display Interface?1 HDMI, 1 VGA Resolution?3840?2160, 1920?1080, 1280?1024, 1280?720, 1024?768 Multi-screen Display?1/4/8/9/16 Trigger Events?Recording, PTZ, Tour, Alarm out, Video Push, Email, FTP, Snapshot, Buzzer & Screen tips Video Detection?Motion Detection, MD Zones: 396(22?18), Video Loss & Tampering Alarm input?4 Channel, Low Level Effective,Green Terminal Interface Relay Output?2 Channel, NO/NC Programmable,Green Terminal Interface Playback and Backup Playback;1/4/8/16 Backup Mode:USB Device/Network Storage Internal HDD:2 SATA III Port, Up to 6 TB capacity for each HDD HDD Mode:Single eSATA:N/A Third-party Support Third-party Support:Dahua, Arecont Vision, AXIS, Bosch, Brickcom,Canon, CP Plus, Dynacolor, Honeywell, Panasonic,Pelco, Samsung, Sanyo, Sony, Videotec, and more Audio and Video IP Camera Input:32 Channel Two-way Talk:1 Channel Input, 1 Channel Output, RCA Recording Compression:H.265/H.264 Record Rate:200Mbps Bit Rate:16Kbps ~ 20Mbps Per Channel Record Mode:Manual, Schedule (Regular, Continuous), MD (Video detection: Motion Detection, Tampering, Video Loss), Stop Network Interface:1 RJ-45 Port (10/100/1000Mbps) Ethernet Port:1 Independent 1000Mbps Ethernet Port PoE:16 ports (IEEE802.3at/af) Max. User Access:128 users Smart Phone:iPhone, iPad, Android Interoperability:ONVIF 2.4, CGI Conformant Electrical Power Supply:AC100V ~ 240V, 50 ~ 60 Hz Power Consumption:NVR: <13.2W (Without HDD) PoE: Max 25.5w for single port, 130w in total Construction Dimensions:1U, 375mm?327.5mm?53mm(14.8″ x 12.9″ x2.1″) Net Weight:2.7kg (6.0 lb) (without HDD) Gross Weight:4.4kg(9.7lb)(without HDD)