Description: Crucial 16GB Kit Lot 2x 8GB SODIMM DDR3 DDR-3 Laptop 12800 1600MHz 1600 Ram Memory Specifications : Capacity: 16GB (2x 8GB Modules) Type: DDR3 SODIMM 204-Pin Speed: DDR3 1600 MHz ( PC3-12800 / PC3-12800S ) ECC Type: Non-ECC Unbuffered Rank: 2Rx8 (Dual Rank x8) Designed for the MacBook Pro (Mid 2012, 13 inch / 15 inch) - Model IDs: MacBookPro9,1 , MacBookPro9,2 Model Numbers: A1278 , A1286 Designed for the iMac (Late 2012, 21.5 / 27 inch), (Early 2013, 21.5 inch), (Late 2013, 21.5 / 27 inch), (Late 2014, Retina 5K, 27 inch), (Mid 2015, Retina 5K, 27 inch) Model IDs: iMac13,1 , iMac13,2 , iMac14,1 , iMac14,2 , iMac14,3 , iMac15,1 Model Numbers: A1418 , A1419 Designed for the Mac mini (Late 2012) - Model IDs: Macmini6,1 , Macmini6,2 | Model Number: A1347 Package l.