John works for Internal Computer Specialists, a company that focuses on helping small business owners resolve MIS infrastructure issues. John's tasks include cleaning and replacing motherboards, cables, and internal device components such as DVDs and hard drives. What does John's role at Internal Computer Specialists focus on fixing?

Hardware.

Explanation:

John is operating with Internal Computer Professionals, an organization committed to assisting sector owners to overcome MIS technology problems. John's duties include maintaining and repairing motherboards, wires, and parts of inner devices including DVDs and hard disks. Although John's appointed for hardware fixation.