A-Tech 4GB KIT 2 x 2GB IBM-Lenovo ThinkCentre A63 A70 0864-xxx 5023-xxx 7099-H6G 7099-xxx 7844-xxx 7846-xxx A70z 2565-xxx A85 0041-xxx 0107-xxx 0163-xxx DIMM DDR3 NON-ECC PC3-10600 1333MHz RAM Memory 4GB KIT (2 x 2GB) 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 IBM-Lenovo IBM-Lenovo ThinkCentre. (See Compatibility List Below)