TestOut LabSim A+ Certification Practice Exam

For a motherboard requiring a 24-pin connector, which power supplies could be used?

1. A 20-pin connector only

2. A 24-pin connector only

3. A 20-pin and a 4-pin connector

4. Any power supply irrespective of pin configuration

The correct answer is: A 20-pin and a 4-pin connector

In the context of a motherboard that requires a 24-pin connector, utilizing a 20-pin and a 4-pin connector is a valid solution. The reason this combination works is that the 20-pin connector can supply the main power needed by the motherboard, while the additional 4-pin connector provides the extra power that some motherboards require for additional stability, particularly for higher-performance components. The 24-pin connector is designed to provide ample power distributed across various lines, including both +3.3V and +5V, which are critical for the functioning of modern motherboards. Some older power supplies come with a 20-pin connector, and the extra 4-pin connector can often be attached to complement the main power feed and fulfill the motherboard’s power requirements. While using a 20-pin connector alone can sometimes allow for basic functionality, it may not provide enough current for more demanding components. Therefore, using the combination of a 20-pin connector with a separate 4-pin connector ensures that the motherboard receives sufficient power. A single 24-pin connector is also a valid option, but other configurations, like just a 20-pin or any arbitrary plug-in regardless of compatibility, might not provide the necessary power and functionality expected from today's power requirements