This unit comes with 48 analog inputs, 32 analog outputs, 8 AES and ADAT outputs, and a Controller card. It includes the correct power supply. There's a minor issue with the Snake 1 Output BNC connector, which may need some adjustment to connect properly, but the Snake 1 Input, and Snake 2 Input and Output all work well.

To use this Digidesign VENUE Stage Rack, first, make sure you connect it to the correct power supply included. Then, you can start plugging in your audio devices to the 48 analog inputs. For outputs, you have 32 analog ones, 8 AES, and ADAT outputs to choose from. When using the Snake 1 Output BNC connector, if you have trouble connecting, just give it a little fidget and it should work. As for maintenance, keep it in a clean and dry place. Check the connections regularly to ensure everything is working properly. If you notice any other issues, it's best to consult a professional.