The Lindy 4 Port HDMI 18G Switch with Audio is a professional solution for providing simple yet reliable switching control over 4 HDMI source devices connected to a single HDMI display, while also expanding a displays HDMI port connections. Supporting HDMI 2.0 18G signals, this switch allows for the transmission of detailed 4K Ultra HD resolutions, while additional support for High-Dynamic Range ensures video content can be seen with enhanced brightness, greater contrasts and a much wider colour gamut, perfect for a premium home cinema experience, eye-catching digital signage in retail settings or engaging presentations. HDCP 2.2 support ensures there are no issues with a variety of 4K content when connected to source devices including set top boxes, Blu-Ray players and 4K HDR media players.As well as HDMI audio pass-through, the switches 3.5mm audio port allows for a separate connection of both analogue speaker systems, and optical audio devices such as soundbars and amplifiers via the included adapter, great for ensuring a multi-channel audio experience to provide a heightened sense of realism for the viewer.This 4 Port HDMI switch also provides a huge range of seamless control options for the user, to ensure efficient, hassle free usage for both new, and experienced users. The switch itself can be controlled manually via push button switching, while it can also identify the active HDMI source device and automatically switch to this option.The included remote control allows the user to have convenient control over multiple videos and audio formats from a distance, great for trade show demonstrations or training presentations, while the RS-232 connection can be used for professional PC control of the switch, or integrating it into other automated PC control systems.