Dahua 8-Channel 240fps at 720P Real-Time HD-CVI H.264 Standalone DVR: Mini-1U, VGA/HDMI, 1ch Audio, 2yr Up to 4/8 cameras with 1080p realtime preview H.264 dual-stream video compression HCVR5104/5108H: All channel 720P HDMI / VGA simultaneous video output 4 channel synchronous realtime playback