HDMI Splitter extended display windows 10 desktop, not duplicate my laptop screen across two monitors. It Split an HDMI Signal to Multiple Displays (And 3 High-Quality HDMI Splitters).

An HDMI splitter takes an HDMI video output from a device, like a Roku, and splits it into two separate audio and video streams. You can then send each video feed to a separate monitor.when you will extend your screen view, the HDMI splitter will let the both the connected monitors display the same thing.

The HDMI cable transmit digital signals and digital signals can be copied without loss of quality, then the quality remains the same with the transmission.

A HDMI splitter will always reduce the signal strength, but a high-quality splitter will reduce the loss. Cables that are too long can also cause a weak signal.

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