4GB KIT (2 x 2GB) DIMM DDR2 NON-ECC PC2-5300 667MHz For HP-Compaq HP Pavilion Desktop. Designed For HP-Compaq HP Pavilion Desktop: A1575kr, A1588d, A1591kl, A1598tw, A1599tw, A6000n, A6005la, A6010.ch, A6010.de, A6010.is, A6010.la, A6010.sc, A6010.uk, A6010e (Non-ECC), A6011.sc, A6013.fr, A6016tw, A6018.ch, A6020.be, A6020.it, A6023.sc, A6025.sc, A6030.pt, A6030.sc, A6030.za, A6030n, A6031.sc, A6032.sc, A6033.de, A6035.se, A6040.it, A6040.nl, A6040.tr, A6042.de, A6045.se, A6046.de, A6050.de, A6050.dk. Will also work with many other brands and models. Genuine A-Tech Brand: A-Tech is one of the most trusted names in Premium Memory. Backed by a Lifetime Warranty and 5 star customer support, A-Tech has you covered! Memory upgrades have never been easier. Designed specifically to help your computer run faster and smoother, an A-Tech memory upgrade is one of the fastest, most affordable, and easiest ways to improve system performance. A-Tech memory empowers your computer to achieve faster application loading times, faster system responsiveness, and increased ability to multitask and handle data-intensive programs. A-Tech modules are rigorously tested to ensure that your memory meets our stringent compatibility and performance standards. Every A-Tech ram module is tested for complete functionality before it leaves our doors and includes toll free technical support at 1-866-557-4527. Give your computer the best, trust A-Tech!