Full Details from Amazon.com : http://www.amazon.com/gp/product/B008LMNSAS?tag=onigi-20
Kingston Technology 32GB Kit of 4 (4 x 8GB) DDR3 1600MHz PC3-12800 ECC DIMM Memory for Select
Four 8GB modules of 1600MHZ DDR3 ECC Memory
Designed and tested for compatibility in various devices
From the industry leader in PC memory
Backed by a lifetime warranty and free technical support