4GB KIT (4 x 1GB) DIMM DDR NON-ECC PC3200 400MHz For HP-Compaq HP Pavilion Desktop. Designed For HP-Compaq HP Pavilion Desktop: A1209kr, A1210.dk, A1210.es, A1210.uk, A1210cl, A1210in, A1210n, A1210tw, A1211kr, A1211n, A1212.dk, A1212kr, A1213w, A1215.dk, A1217cl, A1218.dk, A1218.uk, A1219.dk, A1219.se, A1220la, A1222n, A1224n, A1225.at, A1225l, A1226n, A1227.fr, A1228.dk, A1228x, A1228x-b, A1229.se, A1229x, A1230n, A1232cl, A1233cl, A1237cl, A1238cl, A1238l, A1239.dk, A1239.pt, A1240.fi, A1243w, A1245c. 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!