There are at least four Starbucks in this airport - this is the one in T4 just inside Security Checkpoint C by gates C1-C10.
A surprisingly nice airport Starbucks. When I was there, it was quiet without a line. There is a seating area with four tables and three sets of four armchairs. You could actually sit here and believe that you were at any Starbucks, not inside an airport.
The place was well staffed (I believe there were three employees), and my drinks came quickly. They had bananas when I was there, which was nice, plus a limited assortment of baked goods (it was later in the day).