1GB STICK For HP-Compaq HP Pavilion Desktop A510.uk A510cl A510e A510m A510n A518d A520.it A520d A520n A522n A525cn A530.fr A530e A530n A532x A532x-b A540 A540.fr A545c A562.de A572.de A600n A600y A602n A605m A606cl A608 A608.uk A609 A609.ck A609.dk A609.fi A609.fr A609.no A609.uk A609fi A610 A610.fr A610.pt A610.uk A610e A610n A612n A615CN A615m A616x A619.dk A620.f1 A620d A620n. DIMM DDR NON-ECC PC2700 333MHz RAM Memory. Genuine A-Tech Brand. 1GB STICK DIMM DDR NON-ECC PC2700 333MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For HP-Compaq HP Pavilion Desktop. (See Compatibility List Below)