I bought a USB RJ9 to USB Type A conversion cable and then a USB Type A Female to USB Type A Female to the Turtle Beach P12 headphones and microphone to be able to use this phone instead of the headphones that came with it. If you have USB headphones that you prefer over the ones that come with this phone, this is the way to connect them to your phone. QianLink USB 3.0 Adapter [2 Pcs] Aluminum Type A Female to Female - Male to Male Adapter, USB 3.0 (Female to Female (Blue) is not the Sennehsier USB-RJ9 01 Headset Cable shown in the picture: RJ9 4/4 Male to USB male connector, connects directly to the UI box via your computer's USB port Beach - Ear Force P12 Amplified Gaming Headset - PS4, PS Vita and mobile devices (seems like the newer version doesn't have a USB port) UPDATE: This doesn't work Doesn't work because USB devices require a driver to be loaded, which this phone doesn't do.
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