While setting up a new PC monitor, youll often find two different video cables in the box. One, a pinched trapezoid shape, connects the monitor to a video source over HDMI. The other, with a connector that looks like a rectangle with a corner chopped off, is a DisplayPort cable. But some newer monitors also have a third port for USB C, and youll often find a USB C port labeled as a video out port on laptops, too. While having several connection options is convenient, it not always clear which is...

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