This is a replacement I/O flex cable on the right side for the 13" Retina MacBook Pro.
This connects the I/O ports on the right side to the logic board.
Part Numbers: 923-0559.
Printed Number: 821-1790-A.
<li class="maclist-li"><h4>Compatible with : </h4>
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Pro Retina 13 (A1502, Late 2013/ Mid 2014/ Early 2015).