Swann 1580 4Ch DVR 1580 720P 500GB HDD for Swann H850 H851 A850 A851T835 T845 An advanced easy to use surveillance system with 720p high definition video to see protect your premise Set forget by recording from 4 channels for 105 days+ onto a 500GB hard drive Save time have peace of mind by easily locating incident video, then transfer to external storage via USB or network View live or playback video in high definition on your HDTV, LCD screen or monitor via HDMI connection or VGA port Surveillance in the palm of your hand with live viewing on Smartphone tablets including iPhones, iPads Android devices using the free SwannView Link app Cut the cost of crime know what?s happening with this expandable HD security system to suit front back doorways, yards, homes small businesses DVR4-1580 Digital Video Recorder Video Video Inputs 4 Channels Video Outputs HDMI, VGA Display Resolution Up to 1080p Audio Audio Input 1 RCA Audio Output 1 RCA Recording Recording Resolution Up to 720p Hard Drive Support Includes 500GB SATA HDD (Supports up to 4TB) Connection Network Interface RJ45 Port x 1 USB Interface USB 2.0 x 2 Software Computer Operating Systems Windows, Mac OS Internet Viewing Yes, via free app Handheld Device Supported iOS, Android, 3G/4G Smartphones Tablets General Operating Power DC 12V Dimensions (WxDxH) Swann DVR's work only with certain models of cameras. Pls make sure your cameras are compatible with the Dvr before you place the order. If you have any questions send us a message or call Swann customer service 24/7 at phone number 18006272799 Or visit the following link: https://www.swann.com/media/wysiwyg/docs/swann-camera-compatibility.pdf 8.5" x 8.5" x 1.8" / 215 x 215 x 45mm