A-TECH 4GB KIT (2 x 2GB) For Acer Aspire 5610 5612 5613 5620 5622 5630 5633 5650 5652 5670 5680 5684 5685. SO-DIMM DDR2 NON-ECC PC2-5300 667MHz RAM Memory. Genuine 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 Acer Aspire. (See Compatibility List Below)