Black Box AVSW-DVI4X1 video switch DVI purchased inexpensively from Mercateo

Easy to control from the front panel, the included IR remote controller, or an RS-232 workstation. - EDID copy function for ensuring optimal screen resolution. - LEDs indicate the status of DVI and audio input sources. - Offers full, transparent DDC support. This fast switching system offers greater control in applications where you need to quickly switch both video and audio from various DVI sources for output on a single display. With it, there's no need to manually move DVI cables to display video from another source on an HD display. You can do it electronically with a push of a button. Switching can be done using front-panel buttons, its IR remote controller, or through an RS-232 connection. The built-in serial interface enables you to control the switch via a PC, serial controller device, or a home theater type of system. It's particularly ideal for multimedia conference rooms and corporate theaters, as well as broadcast, video production, or healthcare imaging applications for HD video switching. The switch is fully HDCP compliant for outputting video from Blu-ray players or other HDCP sources. Plus, an EDID copy function enables you to ensure optimum video card communications with your display and its supported resolutions. Also, the switch features full, transparent DDC support.