N81U-M 8CH H.264 DVR Network HDD Digital Video Recorder, Support VGA RJ45 NET USB 2.0(Black) 1. P2P cloud service, including cloud connecting, cloud monitoring, cloud transmitting to access IPC and NVR at any time and any place 2. Support onvif protocol, support High profile S, High profile G, compatible with different IP camera that based on Onvif, RTSP standard 3. Support megapixel HD network video preview, storage and playback; 4. Support search, playback and backup by event; 5. Support all channel image display on one screen at same time, support 4 channels image display by mainstream, and 4 channels playback 6. Support monitor PTZ on preview mode 7. Offer CMS for free 8. Image code control: Image code quality adjustable, variable bitstream and constant bitstream optional 9. Dual stream: Each channel can set main stream and sub stream 10. Video standard: 1080P(1920x1080)30fps960P(1280x960)720P(1280x720)30fps 11. Monitoring image quality: 1080P(1920x1080) 960P(1280x960)720P(1280x720) 12. Image motion detection: Each screen can set mutiple detection areas and set 6-level sensitivity (IPC Support) 13. Recording playback quality: Any 4ch playback simultaneously 14. Region cover: Every channel can set 4 cover regions(IPC support) 15. Recording mode: Support manual, auto, dynamic detection, alarm trigger record mode (Partly needs IPC support) 16. Backup way: Support U disk, USB mobile HDD, USB DVD-RW network storage and backup 17. Video Input: - 8 x (1280*720) +sub(640*360)+4Ref.+4Play 8CH 1.0MP IP Camera - 8 x (1280*960)+sub(640*480)+1Ref.+1Play 8CH 1.3MP IP Camera - 8 x (1920*1080)+sub(640*480)+2Ref.+1Play 8CH 2.0MP IP Camera - 8 x (1920*1080)+sub(720*576)+1Ref.+1Play 8CH 2.0MP IP Camera 18. Audio Input: 8ch network audio input 19. Compatible with main brand IP cameras: AXIS, SONY, Panasonic, SANYO, BOSCH, SAMSUNG, Honeywell, VIVOTEK, Ambarella, HIKVISION, DAHUA, Histream, JXJ, TOPSEE, Launch, D-Link, Cotier, Clevele, HYVISION, WAPA etc.