Right I/O board is connected to the logic board via the I/O board data cable and the I/O board flex cable..
On the right side when facing the screen.
All parts tested and working just like they were when you bought your MacBook..
Part Numbers: 661-6535, 661-7393.
Printed Number: 820-3071-A.
<li class="maclist-li"><h4>Compatible with : </h4>
<ul>
Pro Retina 15 (A1398, Mid 2012/ Early 2013).