4GB STICK For IBM-Lenovo IdeaPad Notebook Series Y530 (40516BU) Y530 (40516HU) Y550 (All Types) Y550p (All Types) Y560 (All Types) Y560d Y650 (All Types) Y730 Yoga 13 Z360 Z370 Z460 Z560 Z565. SO-DIMM DDR3 NON-ECC PC3-8500 1066MHz RAM Memory. Genuine A-Tech Brand. 4GB STICK SO-DIMM DDR3 NON-ECC PC3-8500 1066MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For IBM-Lenovo IdeaPad Notebook Series. (See Compatibility List Below)