Things You'll Need
Instructions
Turn off your Xbox 360 and disconnect any 2.5 mm headsets from your controllers.
Insert the 3.5 mm headset plug into the 3.5 mm port of your 3.5mm-to-2.5 mm adapter. Push the plug into the port until you hear a click.
Insert the 2.5 mm adapter plug into the 2.5 mm port on your Xbox controller. Push the plug into the port until you hear a click.
Turn on your Xbox 360 and log on to Xbox Live.
Test your new headset and adapter by selecting one of your friends from your "Friends List." Create a short audio message and play it back to ensure that your headset's microphone and headphones are working. Delete the message when you are finished with the test.