CompTIA A+ hardware refers to the physical components of a computer system covered under the industry-standard <a class="H23r4e" href="https://www.comptia.org/en-us/certifications/a/" target="_blank" rel="noopener" data-ved="2ahUKEwi2w76WscCXAxUejOEIHVjqGFkQy_kOegoIAggACAAICRAE" data-hveid="CAIIAAgACAkQBA">CompTIA A+ Certification</a> Core 1 exam. These components fall into four main functional categories: processing, storage, input, and output.