The Federal Trade Commission Magnuson-Moss Act protects consumers. This act passed in 1975 states that tie-in sales provisions are NOT allowed in consumer warranties. Manufacturers cannot require consumers to purchase items or services in order to keep their warranty valid. In other words, you cannot be required to add the system manufacturer's memory to maintain the warranty on the system. Also, the system manufacturer cannot state that the system warranty is void if other "brands" of peripherals are used.