How to - Dual monitor using graphics card and onboard!

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The GPU won't show the DP is even plugged in so I can't select it as a video source When I plug back in the HDMI it automatically switches to

dp96 slot How do I connect two monitors to a computer, I have 1 HDMI slot and 3 display port slots and I want extended monitor picture not mirrored?

dpmi080 Use the SD card slot with SD, SDHC, SDXC, MMC, and UHS-II media cards DisplayPort cable to connect a Mini DisplayPort display Mini