I’ve only recently started using proton but knowing that, I’m out. Thanks for the heads up.

I’m out of the loop. What happened to proton?

A common mode choke is a passive electronic component that functions as a filter, blocking high-frequency noise that is “common” to multiple wires in a circuit while allowing the desired low-frequency signal to pass through, effectively suppressing electromagnetic interference (EMI) from unwanted radio signals or other sources within a system.