Powerconnect 3524P serial port disabled?

I work at an electronics recycler and we recently received a large amount of 3524P switches. Normally I end up connecting a serial cable and reset all settings to factory defaults.

Here's the catch-- every switch we received isn't giving a serial output. My guess is that they ended up disabling the console port..?

I was able to find the IP address of the switch and confirmed that the web interface was working (although, I was not able to log in because I don't have credentials)

I am by no means an expert with network switches but I have been wiping switches for about  6 months now without coming across something like this. Here are my serial settings:

Baud: 9600

Data bits: 8

Stop bits: 1

Parity: none

Flow control: none

I would love to be able to somehow re-enable console access without having the admin login. Anyone have any ideas?