Factory Reset TS16 PortServer without login

I have a PortServer TS16 that was purchased as a replacement, whoever sold it too us did not factory reset it before shipping. I was able to figure out it’s IP address via packet capture, I am unable to login too it as the root/dbps password does not work. Is there a way to factory reset the device when I have no access?

So, apparently there is an unlabelled reset button on the front of the panel next to the LED lights. Wasn’t mentioned in the admin guide. Held it down, and power cycled the unit and kept holding until some lights flashed then let it go. That seemed to do the trick.