2GB DDR2 SO-DIMM Upgrade for Dell Latitude E5400 E5500 E6400 E6500 Notebook PC2-6400 Computer Memory (RAM)

I purchased a Dell E6400 on ebay and wanted to boost memory from 2GB to 4GB, for max Windows 8 performance with 32-bit OS [yes, did the $40 upgrade from Vista at the time....well worth it]. Purchased this memory, but upon installation in 2nd DIMM slot "issues" appeared; I called and they sent exact-same-brand-as-pre-existing-memory replacement within 2 days. Turned out it wasn't a memory problem at all but that 2nd DIMM slot connector was bad [ Dell did an on-site motherboard replacement because apparently I still had 5 weeks on the manufacturer's warranty remaining ....sweet deal for a $215 laptop]. New motherboard, memory boost to 4GB, and my Dell w/ Windows 8 is fast!

Ram upgrade came quickly, and in perfect working condition. (still in sealed original Dell packaging.) installation was a no brainier. couldn't be happier. 5/5 stars as far as i'm concerned.