power supply
Hardware Troubleshooting Tools – CompTIA A+ 220-901 – 4.1
To fix your computer, you’re going to need the right tools. In this video, you’ll learn about multimeters, power supply testers, loopback plugs, and POST cards.
CompTIA Network+ N10-005: 2.5 – Troubleshooting Power Failures
Your routers and switches are important infrastructure devices, and they require a different approach to power. In this video, you’ll learn about ways to maintain uptime and availability during power outages and power supply failures.