This unit doesn't come with a power supply. Compact and useful for expanding channels.

To use this expander, first connect it to your relevant device. It's simple to operate, just link up the channels as needed. Remember, this unit doesn't have a power supply, so you'll need to use your own. When not in use, keep it in a dry and clean place. Also, avoid exposing it to extreme temperatures. Regularly check the connections to make sure they're secure. This will help the expander work well for a long time.