TRRS connectors are the 3.5mm audio-style connectors that you see on some phones, MP3 players and development boards. TRRS stands for "Tip, Ring, Ring, Sleeve," which reflects the fact that, unlike a standard stereo connector, this actually has three conductors and a ground. Some devices use the extra conductor for a microphone (like hands-free headsets) or to carry a video signal (like in some MP3/MP4 players) If you're hacking on something that has a 4-conductor audio jack, being able to plug straight in will keep your build clean and simple. https://elecena.pl/product/3826950/audio-cable-trrs-18-pigtail 2012-11-21 https://elecena.pl/product/3826950/audio-cable-trrs-18-pigtail 2016-11-25 https://elecena.pl/product/3826950/audio-cable-trrs-18-pigtail 2016-11-28 https://elecena.pl/product/3826950/audio-cable-trrs-18-pigtail 2016-11-29 https://elecena.pl/product/3826950/audio-cable-trrs-18-pigtail 2016-12-09 https://elecena.pl/product/3826950/audio-cable-trrs-18-pigtail 2016-12-13 https://elecena.pl/product/3826950/audio-cable-trrs-18-pigtail 2017-04-09 https://elecena.pl/product/3826950/audio-cable-trrs-18-pigtail 2017-11-24 https://elecena.pl/product/3826950/audio-cable-trrs-18-pigtail 2017-11-28 https://elecena.pl/product/3826950/audio-cable-trrs-18-pigtail 2018-05-05 https://elecena.pl/product/3826950/audio-cable-trrs-18-pigtail 2018-11-21 https://elecena.pl/product/3826950/audio-cable-trrs-18-pigtail 2018-11-27 https://elecena.pl/product/3826950/audio-cable-trrs-18-pigtail 2022-02-21 https://elecena.pl/product/3826950/audio-cable-trrs-18-pigtail 2025-04-12 https://elecena.pl/product/3826950/audio-cable-trrs-18-pigtail 2025-04-14 https://elecena.pl/product/3826950/audio-cable-trrs-18-pigtail 2025-05-08 https://elecena.pl/product/3826950/audio-cable-trrs-18-pigtail 2025-05-10