General tech specs  
brands Crucial
Technology DDR3L
Density 16GB
Module type SODIMM
Voltage 1.35V
Module quantity  4
Number of Pins
 
204
Total Capacity
 
64GB
Speed & timing  
Speed DDR3L-1866MHZ
CAS latency  13
Package List 4Pcs Crucial 16GB DDR3L 1866MHz SODIMM RAM
Compatible Models
Apple iMac 27-inch late 2015.Model ID: iMac 17,1
3.2GHz i5/ 3.3GHz i5/ 4.0GHz i7