This DVR use the latest MPX multi-format technology, giving you the flexibility to upgrade your security systems to 4K Ultra HD resolution using existing coax cabling1 . With support for up to 4K HD resolution MPX camera and standard analog camera, the DVR is ideal for retrofit applications. Supports the most popular HD-Analog cameras2 . MPX also facilitates advanced features previously unavailable over a coax cable including duplex transmission for PTZ control, audio transmission and extended distance cable runs up to 1000ft (4MP), 500ft (4K).