Gefen GTB-HD4K2K-642-BLK 6x2 Matrix Switcher for HDMI 4Kx2K Black
This product supports resolutions up to 4K x 2K (3840 x 2160 at 30Hz). In addition to through HDMI, digital audio can also be outputted via the two TOSLINK� optical connectors for use with digital audio processors.