Brand: Microsoft Item: Stereo Headset Adapter for Xbox One controller, designed to provide in-game audio and chat controls directly from the controller. Model: 1626 (label on rear); additional number on label: 203416. Color: Black Details: Plugs into the proprietary port on the bottom of an Xbox One controller, features game/chat balance buttons with controller and person icons, central mute button, and volume up/down buttons, rear port and side contacts for connection, headset jack on bottom edge. Label information: Stereo Headset Adapter, Microsoft Corporation, 3.3V 24mA, Made in China.
eBay