BCM RX67Q Industrial mATX motherboard now supports the Multi-Monitors feature running six independent displays simultaneously using its onboard graphics and a PCIe graphics card
Amazon.com: Gaming Motherboard with PCIE x16 Graphics Card Slot, H81 LAG1150 DDR3 Motherboard with HDMI SATA 2.0 USB 2.0 Support VGA HDMI Dual Output 6 Channel Audio Chip : Electronics
Is it possible to remove a VGA port on a PC and replace it with an HDMI port so it can use HDMI cords with monitors? - Quora
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Video Graphics Array - Wikipedia
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How To Connect GPU To The Motherboard In 6 Steps
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How to Fix a Disabled Graphics Card on a Laptop or PC: Reset Your Graphics Card from a Black Screen