The IOGEAR HDMI Source Selector is a 4 port automatic HDMI switch that allows you to easily switch between multiple HDMI sources with the push of a button. The model number GHDMIAS4 indicates a specific product from the IOGEAR brand, designed for seamless connectivity and convenience in your home entertainment setup. With HDMI connectors, this switch is ideal for managing various HD devices and providing a streamlined viewing experience.