These days, if you need to connect two devices via wire, you'll most likely use HDMI. This display protocol supports all sorts of device pairings. It lets you use your iPhone with an external display, ...

Raspberry Pi is known for making small, low-power single-board computers. But you typically have to connect them to a monitor, mouse, keyboard, and other peripherals using cables or wireless ...

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While you might only use your HDMI port to connect audio and video devices, it can do a lot more. Here are some gadgets that leverage the port in unique ways.