The DVI-4521b is a high performance digital routing switcher with two (2) HDMI inputs and one (1) HDMI output. Both inputs and output are fully HDMI v1.3 compatible. Either input signal may be selected as the output signal, which may be routed to an HDMI compatible display or distribution system. Switching can be achieved via front panel selection or by using a supplied IR Remote Control unit. An RS-232 port is provided, which enables the unit to be seamlessly integrated into an AV control system. This unit supports a full array of HDMI v1.3 features, which makes it the ideal solution for high-performance HDMI signal distribution in small display systems.