8GB 2X4GB Memory RAM for Dell Latitude E6400 XFR 200pin 800MHz PC2-6400 DDR2 SO-DIMM Black Diamond Memory Module Upgrade System Specific Memory - Newegg.com
Dell Latitude E6400 RAM Replacement - iFixit Repair Guide
Arch Memory 2GB 200-Pin DDR2 800 MHz So-dimm RAM for Dell Latitude E6400 at Amazon.com
Dell Latitude E6400 Laptop, 14.1" Display, Intel Core 2 Duo Processor, – TekRefurbs
Best Buy: CMS 4GB (2x2GB) Memory RAM Compatible with Dell Latitude E6400, E6400 ATG, E6400 XFR CM256646400SO0204
Dell Latitude E6400 RAM Replacement - iFixit Repair Guide
Dell Latitude 14.1" E5400/E6400 Laptop Notebook Windows 10 Pro 2.4 GHz Core 2 Duo 4GB Ram 160GB WIFI
Dell Latitude E6400 Laptop, 14.1" Display, Intel Core 2 Duo Processor, – TekRefurbs
8GB [2x4GB] DDR2-800 (PC2-6400) RAM Memory Upgrade Kit for The Dell Latitude E6400 (Genuine A-Tech Brand) at Amazon.com
CMS 4GB (1X4GB) DDR2 6400 800MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Dell® Latitude E6400, E6400 Atg, E6400 Xfr - A42 at Amazon.com
2GB Memory Upgrade for Dell Latitude E6400 ATG DDR2 PC2-6400 800MHz 200 pin SODIMM RAM (PARTS-QUICK Brand) at Amazon.com
CMS 2GB (1X2GB) DDR2 6400 800MHZ NON ECC SODIMM Memory Ram Compatible with Dell Latitude E6400, E6400 Atg, E6400 Xfr - A40 - Walmart.com
OFFTEK 2GB Replacement Memory RAM Upgrade for Dell Latitude E6400 (DDR2-6400) Laptop Memory at Amazon.com
8GB 2x4GB PC2-6400 800Mhz DDR2 SODimm Memory for Dell Latitude E6400 E6500 at Amazon.com