It has been revealed that the Kinect that comes with the Xbox One cannot be plugged into PCs.
The one that shipped with the Xbox 360 was compatible with PCs, which allowed for many interesting uses due to all the information the Kinect is able to gather. This time around Microsoft opted for a proprietary connector that will not fit into a PC, and the company does not intend to release an adaptor either. The Kinect for PCs use a standard USB 3.0 port.
The new Kinect for the Xbox One and the new Kinect for PCs will be "built on a share of set technologies". The new Kinect for both platforms will have features such as 1080p video recording, an active IR mode, and a wider field of view than the previous Kinect, but despite the similarities Microsoft insist that they are not entirely the same, thus making cross-platform use impossible.
Despite these incompatibilities, it would not surprise anyone if someone manages to make an adapter that would allow for cross-platform use. Only time will tell.