This is the Audio Port IO Circuit Board / Cable, for the Alienware x15 R2. This houses the Universal audio jack at the right side of the laptop- for connecting headphones or a headset (headphone and microphone combo).
Compatible Dell Laptops:
Alienware x15 R2
DPN: YPFMV
alt Part Number's:
HDS50_AUDIO_CABLE
DC02C00W900
LF-K475P