Night Owl Security NVR7P-441 4 Ch. HD Network Video Recorder with 1TB HDD, HDMI Output, 4 Night Vision 720p Cameras and Free Night Owl Pro App (Black) 4 Channel HD NVR with Pre-Installed 1TB Hard Drive HDMI output. Includes 4 PoE Ports Full 720p HD Recording Resolution (1080 x 720) PC and Mac compatible (Windows XP, 7, 8 / Mac OS 10.8+) Included Night Owl Pro mobile app for Smartphone Integration and Owl Scan TM - Easy 1-2-3 Smartphone Setup