Which gateways are supported?
Zello Work has been tested and verified internally to work with all gateways listed on this page of our website: https://zello.com/accessories/radio-gateways/
However, Zello will work with most existing PC-Radio interfaces, including those intended for Echolink and other RoIP applications. Other hardware that should work with Zello For Work is any echolink-compatible interface, however, we do not offer support for any hardware device that we have not tested and verified internally.
Some manufacturers offer ready-to-use cables to connect to your radio, but you may have to build or order the cable separately.