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The Insignia™ 3-Port HDMI Switch with 4K 60Hz and HDR Pass-Through typically requires the use of its proprietary power adapter to function properly. While some HDMI switches can be powered via a 5V DC USB power output from a TV, this specific model is designed to use the included power adapter to ensure stable performance and full functionality. If you have any other questions or need further assistance, feel free to ask! - Mae | Insignia Support
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