4GB Memory Upgrade for Dell Dimension 8400 Desktop PC 4 X 1GB DDR2 NON-ECC PC2-4200 240 pin 533MHz DIMM RAM (MemoryMasters) - Walmart.com
Zopsc DDR2 4GB RAM 800MHz Memory Module for AMD CPU Stable Fast Data Transmission 240PIN for High Anti-Interference and Antistatic for Desktop Computer, Plug and Play at Amazon.com
4GB [2x2GB] DDR2-533 (PC2-4200) RAM Memory Upgrade Kit for The Compaq HP Media Center TV m8000n (Genuine A-Tech Brand) at Amazon.com