Mike Meyers' CompTIA A+ Guide to Managing and Troubleshooting PCs: (Exams 220-801 & 220-802), 4/e
Michael Meyers
ISBN: 007179591x Copyright year: 2013
Sample Chapter
Some questions on the CompTIA A+ certification exams refer to a PSU, for power supply unit. Read more, download Chapter 10 below which covers "Power Supplies".Download:Chapter 10: Power Supplies
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