If you want to use your Xbox One as a monitor, but don’t have an HDMI cable, there are a few ways to connect it. You can use the Xbox One’s built-in audio output, or you can use an external audio/video receiver. To use the Xbox One’s built-in audio output, connect the receiver to the TV and plug in the Xbox One’s HDMI cable into the receiver. The TV will then show up as an input on the receiver. To use an external audio/video receiver, connect it to the TV and plug in the Xbox One’s HDMI cable into the receiver. The TV will then show up as an input on the receiver. ..