Pinout diagram for the USB Type A Female Port.
If you have a spare micro usb data cable, you can strip it for use with the Game Boy Controller v2.1. Some cables have different colors for the 5v, GND, D+, and D- wires so you may need a multimeter to verify the connections.
Here’s how you wire it to the Pi Zero
These are for the two most popular usb sound adapters with the (1) PCM2704 chip and (2) COB (chip-on-board) chip.
(1) USB Sound Card Adapter with PCM2704 chip
(2) 3D SOUND USB Sound Card Adapter with the COB chip