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In preparation for the CompTIA A+ exam, this chapter covers many important details regarding the safe assembly and disassembly of your PC, voltage and power checks, working with and replacing the power supply, and power-saving tips.

David L. Prowse

As an A+ technician you need to know the basic hardware of mobile devices. This chapter covers Apple devices and Android-based devices, but also briefly discuss some of the other players in the market.

This chapter delves into how power is conveyed to the computer, which power supply to select depending on your configuration and needs, how to install and troubleshoot power supplies, and how to cool the system.

David L. Prowse

This is a complete, 100 question practice exam for the CompTIA A+ 220-801 certification, including detailed answers.

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