This USB port is necessary if you plan to activate Full Link on your Seat or VW MIB2 unit.
If you do not have factory activated Full link, your current USB port only supports Android Auto, not Apple Carplay.
Whilst on the surface it looks identical to your current USB, the internals are different and allow for the reliable operation of Apple Car play & Android Auto
This is a genuine, unused part. Not a cheap, unreliable Chinese clone.
Upon fitting this USB, you'll need to change the usb functionality to USB + IPOD (or USB + iphone, depending on the device you're using). This is found in the long coding. When fitting you'll need to trim off a locating tab on your connector. This becomes obvious during installation