If you already have an Xbox Kinect for Xbox sensor, you only need to purchase the Kinect Adapter for Windows.
Note: Previous versions of the Kinect sensor for Windows included both a Kinect for Windows sensor and an adapter with a power supply.If you don’t have a Kinect sensor, you must purchase both an Xbox Kinect sensor and the Kinect Adapter for Windows. These items are sold separately.
The Kinect Adapter for Windows connects your Kinect for Xbox One sensor to Windows 8.0, 8.1, and 10 PCs and tablets so that you can take advantage of interactive applications that respond to peoples’ movements, gestures, and voice commands. With the adapter, the Kinect for Xbox One sensor performs identically to the Kinect for Windows v2 sensor with v2 applications and development.
The adapter is not for use with Xbox consoles..