So I got my 4x4 table setup and have even done test runs with it. However, I realized that there was a piece of some kind that was wrapped in foam on the table leg and when I removed that I discovered a power adapter. I have no idea what this adapter is for and the only wiring diagram I have for the machine is the single graphic describing where the different color ethernet cables go.



Can someone tell me what this adapter is for?

It is circled in yellow at the bottom of the picture below: