This is the LED driver IC for the LCD display backlight and keyboard backlight.
Can be identified in schematics diagrams and board view files as U7701 or U9701.
Part Numbers: U7701, U9701
Printed Part Numbers: LP8550
<li class="maclist-li"><h4>Compatible with : </h4>
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Air 11 (A1370, Mid 2011)
Air 11 (A1465, Early 2014 / Early 2015 / Mid 2012 / Mid 2013)
Air 13 (A1369, Mid 2011)
Air 11 (A1466, Early 2014 / Early 2015 / Mid 2012 / Mid 2013)
Pro Unibody 13 (A1278, Early 2011 / Mid 2012 / Late 2011)
Pro Unibody 15 (A1286, Early 2011 / Mid 2012 / Late 2011)