A-TECH 8GB KIT (4 x 2GB) For Dell Inspiron 560 560s 570 580 580s. DIMM DDR3 NON-ECC PC3-8500 1066MHz RAM Memory. Genuine Brand. 8GB KIT (4 x 2GB) 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 Dell Inspiron. (See Compatibility List Below)