For more information, visit Apple Support or call 80. Only the AppleCare Protection Plan provides you with direct telephone support from Apple technical experts and the assurance that repairs will be handled by Apple-authorized technicians using genuine Apple parts. Purchase the AppleCare Protection Plan to extend your service and support to three years from your computer’s purchase date. Your Mac mini comes with 90 days of free telephone support and a one-year limited warranty. Typical acoustical performance, sound pressure level (operator position): 4.Operating altitude: tested up to 10,000 feet.Relative humidity: 5% to 95% noncondensing.