WD Customer Loyalty ProgramWD’s Customer Loyalty Program offers customers the opportunity to upgrade their current WD hard drive to a larger drive. Under the program, a customer may purchase a new drive with the full manufacturer warranty at a discounted price.Customers who participate in the WD Customer Loyalty Program are not required to return the old product and also benefit by the ability to upgrade to WD's latest technology. Customers may also take advantage of WD’s extended warranty when purchasing product through the program.To participate in the program, a customer must simply provide one valid product serial number for each upgrade product purchased. These serial numbers will then be void of warranty.Customers will receive a discounted price on a new WD hard drive. Pricing varies and is dependant on a variety of factors, such as capacity and model, among others.Products may be upgraded to products within like technology. For example, only customers upgrading external products may upgrade to another external product. Customers with internal hard drives may not upgrade to external products.Pricing and availability are subject to change. For more information, please contact WD’s Customer Service Department at 1-800-275-4932.