For sale: New, unused Extron SW4 HD 4K device Reason for selling: Extra stored unit. Device uses: This device is a 4-input, 1-output HDMI Switcher. Main uses and functions: 1/ Connecting multiple devices to one screen: Allows you to connect 4 high-definition or 4K sources (e.g., computers, gaming consoles, streaming devices, receivers) to a single output connected to a display, TV, or projector. 2/ Switching and navigating between sources: You can easily switch between connected devices using the numbered front buttons (1, 2, 3, 4), or via the Auto-Switch feature, where the device automatically switches to the newly powered-on source. 3/ Professional and advanced control: Widely used in meeting rooms, classrooms, home theater systems, and professional broadcasting systems; due to its support for external control such as RS-232 protocol, Contact Closure, and IR ports. 4/ Signal and EDID management: Features EDID Minder technology to ensure signal stability and compatibility between the display and connected sources, avoiding image interruption during switching. Please, please, if you are not serious about buying, do not contact me. The reason for selling is explained. I use 4 home screens to display in one frame. Its price is available on websites and is well-known. Any offer that is not appropriate will not be considered or responded to. Thank you. Contact via Haraj platform or WhatsApp.