This adapter by Delock enables you to connect a headset through a 3.5mm stereo jack of your computer or tablet. Just connect the connector of your headset to the colour-coded female ports of the adapter.
Connector: Stereo jack 3.5mm 4 pin > Stereo Audio 3.5mm female & Mic female
Pink socket: microphone
Green socket: audio (stereo)
Cable length: 12 cm (incl. connector)
A free stereo female port which connectes headphones / speakers and microphone through the same connector