I have just purchased 2 of these headsets and headset splitter as the notes section is copied below: Notes: 1. An additional Microsoft adapter (not in Included) is required when connecting an older 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 for power supply, provides 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. :)