Retina Late 2013 - MacBookPro11,1
Compatible upgrades for: ME864LL/A, ME866LL/A, Late 2013 13-inch Retina Macbook Pro's.
Standard RAM: 4 GB, 8 GB*
Maximum RAM: 16 GB*
Details: *4 GB or 8 GB of RAM is onboard by default, but it could be upgraded to 16 GB at the time of purchase at additional cost. RAM cannot be upgraded later.
RAM Slots: 2