Run the check
Count the insulated metal sections on the plug without forcing it into a socket.
Check whether the socket expects output only or a combined headset input and output.
Compare the device manual's wiring standard before using an adapter.
Read the result
A headset mic missing on a three-contact output jack is a routing mismatch, not proof the microphone failed.
| Plug | Metal sections | Typical signal path |
|---|---|---|
| TRS | Tip / ring / sleeve | Often stereo output |
| TRRS | Tip / ring 1 / ring 2 / sleeve | May combine stereo output and microphone input; wiring standard varies |
Limits and next step
TRRS wiring standards and adapters vary; a browser cannot identify plug contacts.
Repeat the check after changing one setting or connection. Keep a record of what changed before deciding whether the device needs service.