Full Details from Amazon.com : http://www.amazon.com/gp/product/B00BF5ZD38?tag=onigi-20
2GB RAM Memory for Acer Aspire M3100-GB7Z 240pin PC2-5300 DDR2 DIMM 667MHz Black Diamond Memory
Brand new certified 240pin PC2-5300 667MHz DDR2 DIMM Black Diamond Memory
Low density 2GB memory single stick memory module
100 compatible garrantee for Acer Aspire M3100-GB7Z
100 pre-tested on Acer system to ensure functionality
Lifetime warranty
