URL : https://www.samsung-security.com/products/Security-Network-Systems/NetworkVideoRecorders/NVRs/SRN-1000.aspx Samsung"s intuitive Network Video Recorder allows you to continuously develop your new or existing security system into a scalable solution. The SRN-1000 is capable of recording 100Mbps of video bandwidth, it also supports a wide range of resolutions from VGA to 5 megapixel in H.264, MPEG4 and MJPEG formats. The SRN-1000 provides maximum flexibility in storage (48TB) with a built-in 1TB HDD, a max of 8 internal HDDs & support for 2 external storage expansion units (SVS-5E).