A TRRS cable is a 3.5mm cable that has a tip, two rings, and a sleeve, meaning it works with audio input to the headset, as well as outputting microphone audio. To be able to use the microphone over 3.5mm TRRS on this headset, you need to make sure your headphone jack is a combo jack. If not, you’ll need to use the USB-A adapter or buy a splitter.