D-Link Camera Video Recorder mydlink-Enabled (DNR-202L) Simultaneously record video and view real-time or playback recorded video from up to four mydlink cameras with the free mydlink View-NVR app Add your own hard drives (2 max) to store your camera video footage Quick and easy setup with auto camera discovery and mydlink service, Free mobile app and web portal for remote viewing System Requirements - Microsoft Windows 8, 7, Vista, or XP SP2 Mac OSX 10.7 or higher