MicroUSB to 3.5 or 2.5 jack headset pinout diagram @ pinoutguide.com
Connector Basics - SparkFun Learn
Black Micro USB 5 Pin Male To 3.5mm Female AUX Audio Sync Headphone Adapter Cable Cord 1m
Amazon.com: USB Type C to 3.5mm Female Headphone Jack Adapter, JSAUX USB C to Aux Audio Dongle Cable Cord Compatible with iPhone 15 Pro Max/15 Pro/15 Plus, Samsung Galaxy S23/S22/S21 Ultra, iPad