Full Details from Amazon.com : http://www.amazon.com/gp/product/B00BF5DIPS?tag=onigi-20
8GB 2X4GB RAM Memory for Asus M4 Series M4A89GTD PRO/USB3 DDR3 DIMM 240pin PC3-8500 1066MHz
Brand new certified 240pin PC3-8500 1066MHz DDR3 DIMM Black Diamond Memory
Low density 8GB 2X4GB memory kit 2 sticks of memory module dual channel supported memory module
100 compatible garrantee for Asus M4 Series M4A89GTD PROUSB3
100 pre-tested on Asus system to ensure functionality
Lifetime warranty
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