OWC 8GB PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Module Upgrade Compatible with iMac, Mac Mini, and MacBook Pro, (OWC1600DDR3S8GB). Product Specs: Technology: DDR3L SO-DIMM, Density: 8GB (8192MB), RoHS: Yes, Pin Count: 204-pin, Op. Temp.: 0C to +85C, Data Rate: DDR3L-1600, Speed: PC3-12800, CL: 11, Cycle Time: 1.875ns, Voltage: 1.35V, ECC: Non ECC, Module Ranks: Dual Rank Register: Non Parity Low Noise 8-Layer PCB, Fully Compliant with JEDEC specifications, RoHS Certified, Warranty Safe Upgrade. COMPATIBLE: MacBook Pro 17-inch (2011 Model ID: MacBookPro8,3) (Early 2011 Model ID: MacBookPro8,3) MacBook Pro 15-inch (2011 Model ID: MacBookPro8,2) (Early 2011 Model ID: MacBookPro8,2) (2012 Model ID: MacBookPro9,1)  MacBook Pro 13-inch (2011Model ID: MacBookPro8,1) (Early 2011 Model ID: MacBookPro8,1) (2012 Model ID: MacBookPro9,2) iMac w/Retina 5K display 27-inch (Mid 2015 Model ID: iMac15,1) (Late 2014 Model ID: iMac15,1) iMac 27-inch (Late 2013 Model ID: iMac14,2) (Late 2012Model ID: iMac13,2) (Mid 2011 Model ID: iMac12,2) iMac 21.5-inch (Mid 2011 Model ID: iMac12,1) Mac mini (Late 2012 Model ID: Macmini6,1 & Macmini6,2) (Late 2012 Server Model ID: Macmini6,2) (Mid 2011 Model ID: Macmini5,1 & Macmini5,2) (Mid 2011 Server Model ID: Macmini5,3) PC Laptops: Compatible with Intel / AMD Process based PCs capable with the specifications listed above. Memory complies with JEDEC Specifications, document JESD79-3B. This OWC Memory is NOT COMPATIBLE with… MacBook Pro 13-inch Retina Display (2014 Model ID: MacBookPro11,1) (2013 Model ID: MacBookPro11,1) ( 2012, 2013 Model ID: MacBookPro10,2) MacBook Pro 15-inch Retina Display (2014 Model ID: MacBookPro11,2) (2013 Model ID: MacBookPro11,2; MacBookPro11,3) (2012, 2013 Model ID: MacBookPro10,1)