Alibi 16-Channel HD-TVI 1080p / 960H Hybrid+ Security DVR Hybrid+ technology supports HD-TVI, analog, and Alibi IP cameras Supports the following camera resolutions: CIF/D1/960H/720p/1080p HD-TVI technology transmits zero latency HD video resolution VGA and HDMI output at up to 19201080 (1080p) resolution NO Hard Drive included ( For BEST RESULTS, buy only the CCTV-Western Digital Hard Drive--PURPLE COLOR) (supports up to 8TB)