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This bi-directional HDMI 2.1 signal switch splitter adopts industrial-grade aluminum casing and high-speed 48Gbps transmission chip to deliver top-tier audiovisual performance. It supports two flexible usage modes: switch mode allows two video sources to share a single display, while splitter mode mirrors or extends one signal to two separate screens. Compliant with HDMI 2.1 specifications, it delivers ultra-crisp 8K@60Hz resolution and fluid 4K@120Hz high refresh rate together with HDR technology, bringing immersive gaming and cinematic viewing experience. The integrated metal shielding structure greatly reduces signal attenuation and external interference to maintain stable transmission during switching. It works seamlessly with mainstream entertainment hardware including PS5, Xbox Series X, Apple TV and Samsung UHD TVs. No extra software or power adapter is required for daily use; simply press the control button to toggle input/output sources in seconds. Durable metal appearance and small footprint make it an ideal cable management accessory for gaming setups, home theaters and living room multimedia systems.