Hikvision 7104 Series 4 Channel Turbo 720p High Definition Stand Alone DVR - Support H.264+/H.264 video compression, 4 Channel Analog and HD-TVI video input, BNC interface (1.0Vp-p, 75 Ω),supporting coaxitron connection, Audio Input: 1 channel, SATA Interface Support up to 6TB Hard disk drive, 10/100 self-adaptive Ethernet interface 2x USB 2.0 Ports on Rear panel, Supports real-time 1080p lite whe..