This unit doesn't come with an external power supply.

Using this Crestron receiver is easy. First, connect your HDMI device to the receiver. Then, link it to your display via HDBaseT cable. Remember, as this unit doesn't have a power supply, you'll need to use your own suitable power source. For maintenance, keep it in a clean and dry place. Avoid exposing it to extreme temperatures or humidity. If there are any issues, check all the connections first before seeking further help.