Setup and Quick Reference Guide 23Limited Warranties and Return PolicyDell-branded hardware products purchased in the U.S. or Canada comewith either a 90-day, one-year, two-year, three-year, or four-year (U.S. only)limited warranty. To determine which warranty you purchased, see the Dellinvoice that accompanied your computer. The following sections describethe limited warranties for the U.S., the Return Policy for the U.S., thelimited warranties for Canada, and the manufacturer guarantee for LatinAmerica and the Caribbean.Limited Warranty for the U.S.What is covered by this limited warranty?This limited warranty covers defects in materials and workmanship in your—our end-usercustomer's—Dell-branded hardware products, including Dell-branded monitors, keyboards,and pointing devices (mice).What is not covered by this limited warranty?This limited warranty does not cover:• Software, including the operating system and software added to the Dell-brandedhardware products through our factory-integration system, third-party software, or thereloading of software• Non-Dell-branded products and accessories• Problems that result from:– External causes such as accident, abuse, misuse, or problems with electrical power– Servicing not authorized by us– Usage that is not in accordance with product instructions– Failure to follow the product instructions or failure to perform preventivemaintenance– Problems caused by using accessories, parts, or components not supplied by us• Products with missing or altered service tags or serial numbers• Products for which we have not received payment