A-TECH 4GB KIT (2 x 2GB) For Dell Vostro 1440 1450 1540 1550 3300 3350 3400 3450 3500 3550 3555 360 3700 3750 V13 V130 V131. SO-DIMM DDR3 NON-ECC PC3-10600 1333MHz RAM Memory. Genuine Brand. 4GB KIT (2 x 2GB) SO-DIMM DDR3 NON-ECC PC3-10600 1333MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Dell Vostro. (See Compatibility List Below)