This Movek myMix personal monitor mixer doesn't come with a power supply, but it can be powered through PoE. It's a great choice for personal monitoring needs. However, be aware that the screen has slight scratches.

Using the Movek myMix Personal Monitor Mixer is easy. First, if you don't have a separate power supply, connect it to a PoE - enabled source to power it up. When using, you can adjust the settings according to your personal audio needs. Be careful when handling the mixer, especially around the screen which has slight scratches already. To keep it in good condition, clean it gently with a soft, dry cloth regularly. Avoid exposing it to extreme temperatures or humidity. If you encounter any issues, check the connections first before seeking further help.