SOLVED: Logitech headset usb wiring diagram? - Fixya wwwa››Logitech›USB HEADSET H390Can i repair the cable on my headset myself. their is a short in the wire and no sound out of the left side Logitech USB with in line volume. problem is lately all the higher end headphones and usb sets use microthin wires. there is fine strands like as thin as a string and woven into it Wired Headsets: A Tutorial on Connectors, Cables & Pinouts Wired Headsets: A Tutorial on Connectors, Cables & Pinouts. It was also called a “mini-jack” since stereo headphones for listening to music used the full-sized, 1/4” phone plug. It’s unclear if the creation of the earphone feature was motivated by the desire to listen to the radio after bedtime, or avoid aggravating the Mrs with the play-by-play of the baseball game.