4GB STICK For Dell Studio Desktop Series XPS 435 XPS 8000 XPS 8100 XPS 9000. DIMM DDR3 NON-ECC PC3-8500 1066MHz RAM Memory. Genuine A-Tech Brand.<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>4GB STICK DIMM DDR3 NON-ECC PC3-8500 1066MHz RAM Memory</li><li>Genuine A-Tech Memory</li><li>Lifetime Warranty</li><li>Toll Free Technical Support 1-866-557-4527</li><li>Designed For Dell Studio Desktop Series. (See Compatibility List Below)</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41r%2Bjv7Ni4L.jpg" noproxy>