Headset Adapter 1×3.5mm 4 pin Stereo jack female -> 2×3.5mm 3pin Stereo-jack han

Delock Headset Adapter 1 x 3.5 mm 4 pin Stereo jack female > 2 x 3.5 mm 3 pin Stereo jack male (iPhone)

This headset adapter by Delock enables the connection of an iPhone
headset with 3.5 mm 4 pin stereo jack male connector to your
computer or notebook with two 3.5 mm 3 pin stereo jack female
ports.

Specification :
Connector: 1 x stereo jack female 3.5 mm 4 pin > 2 x stereo jack male 3.5 mm 3 pin
Stereo jack male: red: microphone / green: audio
Pin assignment 4 pin stereo jack female with CTIA standard:
Audio left – Audio right – GND – AUX
Colour: white
Cable length: ca. 20 cm (incl. connector)
System requirements
Two free stereo ports: microphone and audio