I have just purchased 2 of these headphones and headphone splitter as the notes section is copied below: Notes: 1. To connect an additional Microsoft - Adapter (not included) needed to an older version of the Xbox One controller. A 2.1 to 2-3.5mm splitter cable (not included) is required to connect to a PC if you want to use headphones and a microphone at the same time. 3. The USB interface is only used to power the LED light to highlight the atmosphere of the game. Spring . BOTH headsets came with a PC headset splitter in the box. I don't know who added the number 2 in the notes, but a splitter is included with this version of the headset. :)