Bidirectional HDTV Switcher — Practical 4K HDMI switching and mirroring without external power Key benefits Simplifies multi-screen setups: either route two HD sources to a single display or duplicate one source to two displays. Ideal when you need the same content shown on multiple screens or to select between two devices. No external power or complicated setup: truly plug-and-play. Switch inputs or outputs quickly with the built-in button. Reliable audio/video performance: supports high-clear 4K video and synchronized audio/video transmission for stable, high-quality playback. What it does (core functions) Switches between 2 HD sources to a single display. Switches a single source between 2 displays (bidirectional operation). Button-controlled switching — no software or remote required. No external power adapter needed. Compatibility and performance Designed for standard HDTV/HD sources and displays; preserves high-definition video and audio quality up to 4K resolution. Ensures synchronous music and video transmission for consistent A/V playback across screens. Simple integration with home theaters, conference room projectors, monitors, gaming consoles, media players and other HDMI-capable devices. Practical use scenarios Business presentations: Alternate between two laptops on a conference-room projector, or mirror one presenter’s screen to a secondary monitor for an audience. Education and training: Share the same instructional video from one media source to a classroom projector and a wall-mounted display simultaneously. Home entertainment and gaming: Easily switch between a Blu-ray player and a game console on a single TV, or mirror gameplay to a second screen for streaming or family viewing. Why customers choose this switcher Eliminates the need for extra power supplies and complex configuration. Small, user-friendly control (single button) for fast, reliable switching. Maintains clear 4K video and synchronized audio across connected devices for consistent viewing quality.