The Extron MPS 409 Digital media Presentation Switcher is a rack-mountable unit designed for professional video production and editing. With four inputs and one output, it supports various connectivity options including VGA, DVI, and HDMI. Ideal for switching between multiple signals for a seamless presentation experience, this model from Extron is a versatile tool for managing different video sources in a production setting. Its durable design and compatibility with rack mounts make it a convenient and reliable solution for integrating into existing setups.