Samsung ram Memory Upgrade DDR3 PC3 12800, 1600MHz, 204 PIN, SODIMM for 2012 Apple MacBook Pro's, 2012 iMac's, and 2011/2012 Mac Mini's (16GB kit (2 x 8GB))
Brand: SAMSUNG
Compatible to:

MacBook Pro 2.3GHz Intel Core i7 (15-inch DDR3) Mid-2012
MacBook Pro 2.5GHz Intel Core i5 (13-inch DDR3) Mid-2012
MacBook Pro 2.6GHz Intel Core i7 (15-inch DDR3) Mid-2012
MacBook Pro 2.7GHz Intel Core i7 (15-inch DDR3) Mid-2012
MacBook Pro 2.9GHz Intel Core i7 (13-inch DDR3) Mid-2012

iMac 2.9GHz Quad-Core Intel Core i5 (27-inch, Late 2012)
iMac 3.2GHz Quad-Core Intel Core i5 (27-inch, Late 2012)
iMac 3.4GHz Quad-Core Intel Core i7 (27-inch, Late 2012)
iMac 3.4GHz Quad-Core Intel Core i5 (27-inch, Late 2013)
iMac 3.5GHz Quad-Core Intel Core i7 (27-inch, Late 2013)

Mac mini (Late 2012)
Mac Mini 2.3GHz Quad-Core Intel Core i7 - Late 2012
Mac Mini 2.5GHz Dual-Core Intel Core i5 - Late 2012
Mac Mini 2.6GHz Quad-Core Intel Core i7 - Late 2012

Mac mini (Intel Core i5 2.3Ghz) DDR3 - Mid 2011
Mac mini (Intel Core i5 2.5Ghz) DDR3 - Mid 2011
Mac mini (Intel Core i7 2.0Ghz) DDR3 - Mid 2011 Server
Mac mini (Intel Core i7 2.7Ghz) DDR3 - Mid 2011

The profile will tell you what kind of memory and how much memory is in your system.

Open the Apple menu,and then select ABOUT THIS MAC.
The About This Mac screen opens. CLICK THE MORE INFO... button.
HARDWARE OVERVIEW
The System Profile screen opens, showing the HARDWARE OVERVIEW.
CURRENT MEMORY INFORMATION
In the CONTENTS section on the left side of the screen, click MEMORY. The MEMORY SLOT information appears, showing your current memory configuration ( make sure, yours is DDR3 1600MHz ).
This information helps you determine which slots are filled with which type of memory, and how many slots are still available to install new ram memory.
Module Size: 16GB kit (8GBx2)
Package: 204-pin SODIMM
Feature: DDR3 PC3L-12800
Specs: DDR3 PC3L-12800 , CL=11 , Unbuffered , NON-ECC , DDR3-1600MHz , 1.35V
Lifetime warranty. Scroll down to see compatible models below.