Re: CMM4

The EtherWAN default passwords are:

Model EX72129A - root (not changeable by user) No password
Model EX96000 - admin (not changeable by user) No password

The CMM3, CMM4 and EtherWAN Switch documents are located at the Cambium Software Download page under PMP Accessories.  https://support.cambiumnetworks.com/files/pmpacc/