Appendix 133If Dell elects to exchange a system or component, the exchange will bemade in accordance with Dell's Exchange Policy in effect on the date of theexchange. In any instance in which Dell issues a Return MaterialAuthorization Number, Dell must receive the product(s) for repair prior tothe expiration of the limited warranty period in order for the repairs to becovered by the limited warranty.These provisions apply to Dell's four-year limited warranty only. Forprovisions of any on-site service contract covering your system, refer to theseparate on-site service contract that you will receive.One-Year Limited Warranty (Canada Only)Dell Computer Corporation ("Dell") manufactures its hardware productsfrom parts and components that are new or equivalent to new in accordancewith industry-standard practices. Dell warrants that the hardwareproducts it manufactures will be free from defects in materials andworkmanship. The limited warranty term is one year beginning on the dateof invoice, as further described in the following text.Damage due to shipping the products to you is covered under this limitedwarranty. Otherwise, this limited warranty does not cover damage due toexternal causes, including accident, abuse, misuse, problems with electricalpower, servicing not authorized by Dell, usage not in accordance withproduct instructions, failure to perform required preventive maintenance,and problems caused by use of parts and components not supplied by Dell.This limited warranty does not cover any items that are in one or more ofthe following categories: software; external devices (except as specificallynoted); accessories or parts added to a Dell system after the system isshipped from Dell; accessories or parts added to a Dell system throughDell’s system integration department; accessories or parts that are notinstalled in the Dell factory; or Dell Software and Peripherals products.Monitors, keyboards, and mice that are Dell-branded or that are includedon Dell’s standard price list are covered under this limited warranty; allother monitors, keyboards, and mice (including those sold through the DellSoftware and Peripherals program) are not covered.