3.5 mm, 2.5 mm or 6.25 mm TRS audio plug pinout diagram @ pinoutsguide.com
Pinout of 3.5 mm or 6.25 mm Stereo Telephone plug and layout of 3 pin stereo plug connectorused in various audio hardware, including computer audiocards ... A TRS connector (tip, ring, sleeve) also called an audio jack, phone jack, phone plug, jack plug, ...