4GB KIT 2x 2GB Dell Latitude 531 630 830 ATG ATG D620 ATG D630 D520 D530 D531 D620 D630 D630 XFR D630C D631 D820 D830 XFR XFR D630 SO-DIMM DDR2 NON-ECC PC2-5300 667MHz RAM Memory Genuine A-Tech Brand 4GB KIT (2 x 2GB) SO-DIMM DDR2 NON-ECC PC2-5300 667MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Dell Latitude Series. (See Compatibility List Below)