2GB KIT (2 x 1GB) For HP-Compaq HP Pavilion Desktop S3080d S3180d S7310n S7320n S7400n S7410n S7415c S7420n S7421c S7500cn S7500y S7510n S7517c S7520cn S7520kr S7520la S7527c S7530n S7540a S7545a S7550d S7600 S7600e S7600n S7600y (2 DIMM Slots) S7605.fr S7605n S7610.es S7610.fr S7610.it S7610.pt S7610.sc S7612n S7613w S7615.fr S7617c S7620.be S7620.uk S7620la S7620n S7620nl S7627c. DIMM DDR2 NON-ECC PC2-4200 533MHz RAM Memory. Genuine A-Tech Brand. 2GB KIT (2 x 1GB) DIMM DDR2 NON-ECC PC2-4200 533MHz 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)