A-TECH 2GB KIT 2x 1GB eMachines W Series Desktop W3506 W3609 W3611 W3619 W3621 W3622 W3623 W3629 W3644 W3650 W3653 W5233 W5243 W6409 W3507A DIMM DDR2 NON-ECC PC2-5300 667MHz RAM Memory Genuine Brand 2GB KIT (2 x 1GB) 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 eMachines W Series Desktop. (See Compatibility List Below)