Dell Latitude E6400 RAM Replacement - iFixit Repair Guide
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
Certified Refurbished Dell latitude e6400(C2D,2GB,160GB) - ReTechie
Dell Latitude E6400 RAM Replacement - iFixit Repair Guide
2GB RAM Memory Upgrade for the Dell Latitude E6400 | eBay