Fujitsu LifeBook S6311 Laptop CPU Cooling Fan, brand new replacement that is made from A grade quality parts, is tested throughout the manufacturing process to match the original Fujitsu LifeBook S6311 Fan's performance. For it is made under the international standards and certification(CE, UL Listed, ISO9001/9002), we ensure that our replacemnt Fujitsu LifeBook S6311 CPU fan will be quite compatible with original equipment and specifications. With 30-days money-back guarantee on all the products.