A number of RealSimGear hardware items have built-in video displays, such as the G1000, GNS430/530, and GTN650/750 units. Each of these units requires a dedicated HDMI video connection to your PC, and once connected to your PC, needs to be set up as "Extended Desktop" mode.
As one can imagine, if your simulator is already running other displays, for instance, the standard 3 display setup for external visuals, and one wants to add the G1000 package (for instance), your video card may simply not have enough video connections to support it all.
Well, good news! There are a few inexpensive options out there to get a few more HDMI connections from your PC.
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First note, be careful that you DO NOT use a SPLITTER. Instead, make sure you are using one of the options below. A "splitter" will give you 2 for 1 on-screen support, but it will simply duplicate your images, not really want you to want.
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In many cases, your PC is using a stand-alone video card (such as a Nvidia RTX or GTX). However, in most cases, your motherboard ALSO has a small video card in it as well, known as the "onboard video". Typically this onboard card is disabled in your computer BIOS when a stand-alone card is installed, but it is possible to re-enable the onboard and use them to power more displays. Check with your PC maker on whether this might be possible on your system.
RealSimGear does not recommend using DVI to HDMI cables or adapters.
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If your computer has USB3 ports (the blue or red ports), you can use a RealSimGear USB3 to Dual HDMI adapter. It will provide you with two HDMI ports at the cost of one USB 3.0+ port (almost like a small external video card).
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Or THIS one which provides a single HDMI connection
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The same goes for USB-C ports, THIS USB-C > HDMI adapter will provide a single HDMI connection.
