This unit doesn't come with a power supply or a USB cable.

Using the Roland V - 02HD Multi - Format Video Mixer is easy. First, since it doesn't have a power supply, you need to get a compatible one on your own. Connect the mixer to your video sources. Then, start adjusting the settings to mix the videos according to your needs. Remember, without the power supply, it won't work, so make sure you have it ready. When it comes to maintenance, keep it in a dry and clean place. Avoid exposing it to extreme temperatures or humidity. If you need to clean it, use a soft, dry cloth. That's all you need to know to use and take care of this video mixer.