4GB STICK SO-DIMM DDR3 NON-ECC PC3-10600 1333MHz For Sony Vaio VPC S Series. Designed For Sony Vaio VPC S Series: VPCSB2L1E, VPCSB2M9E, VPCSB2S9E, VPCSB2V9E, VPCSB31FD, VPCSB31FX, VPCSB33GX, VPCSB35FA/L, VPCSB35FB, VPCSB35FH/P, VPCSB36FA/R, VPCSB36FG/R, VPCSB36FH/R, VPCSB36FN/B, VPCSB37GA/B, VPCSB37GG, VPCSB37GH/B, VPCSB38GA/B, VPCSB38GG/B, VPCSB38GH/B, VPCSB3AFX, VPCSB3N9E, VPCSB3Q9E, VPCSB3S9E, VPCSB3T9E, VPCSB41FD, VPCSB45FL, VPCSB490S, VPCSB490X, VPCSB4AFX, VPCSB4AFX/B, VPCSB4AFX/W, VPCSB4CFX. 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!