High definition multimedia interface (HDMI) is a type of connection system used with digital video and audio. A HDMI cable is capable of transmitting uncompressed digital video and audio to a variety of devices, including digital televisions, console gaming systems, or Computer Monitors. The cable can transmit 720p, 1080i, or 1080p resolution to the device, sending high definition signals to your HDTV. Use the following instructions to properly connect a HDMI cable to the compatible device of your choice.Step 1Choose which device or devices you would like to connect using the HDMI cable. Ensure that each device you would like to use has one or more HDMI slots. Some televisions and computer monitors have multiple HDMI slots that can support more than one device. Of course, this will require more than one HDMI cable. If the device only has one available HDMI slot, you will only be able to use one component at a time.Step 2Examine the back of the component if which you would like to connect using the HDMI cable. Modern devices, such as the Xbox 360, PS3, Blu-ray player, and DVR, all have the same type of connection. On the back of each one of these devices, there is a slot labeled "HDMI." Plug one end of the HDMI cable into this port and ensure the cable is secure.Step 3Plug the other end of the HDMI cable into the computer monitor or the HDTV system. Look for the HDMI slot on the back or side of the computer. If multiple slots are available, choose any that are labeled with the HDMI stamp. The end of the HDMI cable is "keyed", meaning that it can only go in the device one way. Turn on the television or computer monitor. Select the input channel that matches up with the HDMI cable, then turn the device on.HDMI cables can be found at any major retailer or online. Never pay more than $20 for an HDMI cable, as all of these cords are primarily the same in quality and will deliver the same results.