What is HDMI Splitter?
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An HDMI splitter takes the 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 channel to a separate monitor.
Unfortunately, most splitters suck. Many don't work due to an anti-piracy measure built into the hardware called High-Bandwidth Digital Content Protection (HDCP).
How to set up multiple displays
If a monitor is connected to the TV at the same time, the Windows 7/8/10 system will consider that several displays are connected. In general, it doesn’t matter what it is, a TV or a Monica, for the system it’s all displays.
There are two modes for multiple displays: duplication (cloning) and desktop extension. This is selected in the same place where you set the resolution.
Duplicating screen
If cloned, your desktop will appear identical on both devices. At the same time, the screen resolution is common for both devices, and it is impossible to set it differently, at least for now. If you know how this can be done, please write to me in the comments.
