Full Details from Amazon.com : http://www.amazon.com/gp/product/B002SQQKGC?tag=onigi-20
4GB Memory RAM for Dell Latitude E5400 E5500 E6500 E6400 E6400 ATG 200pin PC2-6400 800MHz DDR2
Brand new certified 200pin PC2-6400 800MHz DDR2 SO-DIMM Black Diamond Memory
Low density 4GB memory single stick memory module
100 compatible garrantee for Dell Latitude E5400
100 pre-tested on Dell system to ensure functionality
Lifetime warranty
