Model YZ-W301L8 YZ-W301H4 Connections 2MP--8channel 5MP--4channel Operating System Linux Embedded Real-Time Operating System Image encoding standards H.265 Screen splitting 1/4/6/8 1/4 Multiplex Playback 4-way main stream resolution synchronous playback 1-way main stream resolution synchronous playback Video mode Manual recording, timed recording, motion detection recording, alarm recording, etc. are optional Video Preservation Local hard disk, client remote recording Backup method Client Download Backup Video Output 1 channel VGA output, resolution up to 1920 * 1080; 1 channel HDMI, support 4K resolution output copies Audio Output HDMI composite stream (requires display device to support HDMI audio playback) Network Interface 1 x RJ45 10/100M Ethernet port Antenna 2 x 5dBi enhanced antennas (primary and secondary) Storage 1 SATA interface for 6TB hard drives Remote Monitoring P2P plug-and-play, support Web (web), computer client, cell phone APP remote access Power supply DC12V