Logic board with upgraded onboard 2.8GHz Intel Core i5 (i5-4308U) processor and upgraded 16GB memory. If you want to upgrade the RAM or CPU, you'll need to upgrade the whole board.
MacBook Pro / MacBookPro11,1 / 2.6 GHz - i5 - ( Late 2013, 13-Inch )
MacBook Pro / MacBookPro11,1 / 2.4 GHz - i5 - ( Late 2013, 13-Inch )
Product details
661-00610 Apple 13inch MacBook Pro Retina Mid 2014 Logic Board 2.8GHz 16GB A1502 NB-5279W This is a replacement 2.8GHz logic board with 16GB of onboard RAM for the 13" Retina MacBook Pro released in Mid 2014. EEE code: G3LT,G3M0
Apple part number: 661-00610
Compatible models: Macbook Pro (Retina 13-inch Mid 2014), A1502