A-TECH 4GB KIT 2x 2GB Dell Inspiron 11z 1110 13 1318 14 1420 1427 1440 15 1520 1521 1525 1526 1545 1546 17 1720 1721 1750 SO-DIMM DDR2 NON-ECC PC2-6400 800MHz RAM Memory Genuine Brand 4GB KIT (2 x 2GB) SO-DIMM DDR2 NON-ECC PC2-6400 800MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Dell Inspiron. (See Compatibility List Below)