This is a replacement flex cable that connects the I/O board with the logic board.
All parts tested and working just like they were when you bought your MacBook..
Part Numbers: 923-0095.
Printed Number: 821-1372-A.
<li class="maclist-li"><h4>Compatible with : </h4>
<ul>
Pro Retina 15 (A1398, Mid 2012/ Early 2013).