I have a CN4200 chassis with a CN-ESOM-IP controller card that I need to reset the password to due to the password being unknown. I have tried holding down the reset button for more than 2 seconds which some google searches said to do to set this card to factory defaults but this doesn't seem to be working. Any advice on how I can reset the password on this controller card? doing a factory reset is fine because this unit will be used in a work lab. from what I understand the login defaults should be ipiadmin/ipiadmin123 is this correct?