JVS-ND7104-HZ. Video Input: 4 Channel. Video Output: 1920×1080/1280×1024/1280x720. Video Compression: H.264/H.265. HDD Type: 2 * SATA HDD. Quantity of HDD: 4 TB Supported. USB Copy: Support pen drive/mobile hard disk with FAT32 format. Search Mode: Channel number/recording type/date (single or group). Protocol: TCP/IP, DHCP, UDP, SMTP, NTP. Mobile O/S:Android/iOS. Power Supply: DC 12V.