CompTIA A+ 220-901

Answer: D - All of the above hardware components are found in all mobile devices except USB ports.

Key Takeaway: Since mobile devices, such as tablet computers, are still computers at their core, they have many of the same hardware components. What changes from a larger computer to a smaller one, however, are the specifications of these components; in a mobile device they are built for portability and battery life, not necessarily performance. Therefore, flash memory is used in place of a hard drive. While all mobile devices have a port of some sort (for instance, a power port), they do not all have USB compatible ports-most notably, iPads and iPhones