Hi,

I have a Dell S3048-ON with unknown configuration that I'm trying to reset.

I have tried connecting the management port to the LAN, but it does not try to obtain a IP address from the server, the only packets observed coming out of the switch are LLDP broadcast about ManagementEthernet 1/1

So I made a cable to connect the RJ45 rs-232 port to a usb to serial port

I used an oscilloscope to ensure I had the right pinout, I am certain I have the switch's TX connected to the RX of my serial to usb adapter.

When the switch reboot, I can see garbled text come out. 

I have tried changing to every baud rate that my adapter supports including 9600, 19200, 115200 and the ones inbetween, still no valid text appears !

I have tried 3 serial to usb cables, I have tried a serial to ethernet bridge, it all looks very similar and wrong.

For the other settings I have 8 data bit, 1 stop bit, parity none

I don't know what else to try.

My last two options are to try using a raspberry pi or an arduino to read the serial port data maybe ? 

Is there a reset button on the switch, or a way to for it to boot ONIE installer on the USB so that I could telnet or ssh into it after it obtains an address from DHCP server ?

What else can I try ?