This unit comes without a power supply. It has firmware version 8.5.4.43.

To use this Symetrix Prism 4x4 Dante Digital Signal Processor, you'll need to connect it to an external power supply as it doesn't come with one. Once powered on, you can start processing digital signals with its Dante functionality. Remember to check the firmware version 8.5.4.43 regularly for updates. When it comes to maintenance, keep it in a clean and dry place. Avoid exposing it to extreme temperatures or moisture. If you encounter any issues, refer to the official Symetrix support for assistance.