4GB Kit (2GB X 2) Memory Upgrade for Dell XPS M1530 DDR2 PC2-6400 800MHz 200 pin SODIMM RAM (PARTS-QUICK BRAND) Capacity: 4GB Kit (2GB X 2) Form Factor: 200 pin SO-DIMM DDR2 Speed: 800MHz PC2-6400 Halogen Free; ROHS Warranty: Lifetime Industry Standard Low Density Memory