If your Box is online, then you can configure the secondary NIC via your browser.
You need to know the interface_name of the target secondary NIC.
|Camio Box 1510A||eno1||enp2s0|
|Camio Box 17xxR||eno1||eno2|
For example, the secondary NIC of the Camio Box 1510A is enp2s0, so configure it using the link:
The device_id is obtained from your Support page.
If the Box doesn't have a network connection, then you can use a USB drive to set its secondary NIC.