Kanex Pro VGA 4x4 High Resolution Matrix Switcher with Audio & RS-232, Rack Mountable Metal Enclosure (rack ears not inlcuded) Full HD 1080p(1920x1080at60Hz) Stereo audio with 8x 3.5mm jack (4 input/4 output) Rack mountable metal enclosure (rack ears not included) 5VDC external power supply included Control through RS-232, IR remote & front-panel buttons