Audio Jack Differences
Distinction between TRS and TRRS#
It is important to note that for different 3.5mm audio cables, there are different specifications. Observe whether the jack has 3 rings (TRRS) or 2 rings (TRS). Please note to use the correct USB audio adapter for the type of audio jack you own.
| TRS | TRRS | |
|---|---|---|
| form | 2 black bands (1 ring) | 3 black bands (2 rings) |
| function | stereo out only/ stereo in only | stereo out + mono mic in |
| typical device | dedicated earphones, dedicated microphone | earphones or headset with microphone function |
| USB sound card needed | Split into dedicated audio in/out channels. Example sound card | One jack with "combo"/"2-in-1" function, example sound card |