4GB STICK SO-DIMM DDR3 NON-ECC PC3-8500 1066MHz For Toshiba Toshiba Satellite. Designed For Toshiba Toshiba Satellite: L635-S3030, L635-S3040, L635-S3040BN, L635-S3040RD, L635-S3040WH, L635-S3050, L635-S3050BN, L635-S3050RD, L635-S3050WH, L635-S3100, L635-S3100BN, L635-S3100RD, L635-S3100WH, L635-S3104, L635-S3104BN, L635-S3104RD, L635-S3104WH, L635-S3106, L635-S3160M, L635-S9310D, L635-S9320, L635-S9321D, L635-S9322D, L635-S9330D, L635-SP3001, L635-SP3001L, L635-SP3001M, L635-SP3002, L635-SP3002L. 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!