Gefen today announced the release of its ex-tend-it 4×4 DVI Matrix Switch, an addition to the ex-tend-it Professional Series that combines multiple, cross-platform DVI video sources with multiple DVI displays to create an integrated environment without networking or patching cords. It may be used with digital video sources, displays and projectors, provided each source and destination uses DVI connectors to send and receive visual data. When used with computers, the Matrix accommodates a keyboard/mouse connection via a USB connector that is switched for each source along with the video. The new 4×4 DVI Matrix Switch carries a retail price of US$2499.