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Difficulty: EasyMotherboards Form Factors and Connectors

A technician is reviewing power delivery specifications for a desktop PC motherboard replacement. Which of the following power connectors are standard components designed to provide power directly to modern desktop motherboards and their onboard components? (Select TWO.)

  1. 24-pin ATX main power connectorAnswer
  2. 8-pin EPS/CPU power connectorAnswer
  3. C
    SO-DIMM power bridge header
  4. D
    M.2 SATA key power cable

Answer

The correct motherboard power connectors are the 24-pin ATX main power connector and the 8-pin EPS/CPU power connector.
Standard desktop motherboards utilize a 24-pin ATX connector as their primary power source and an 8-pin (or 4-pin) EPS/CPU connector to supply dedicated power to the processor.

Step-by-Step Solution

1
Identify main power requirements for ATX motherboards
Recognize that standard desktop motherboards require a main 24-pin P1 connector to power chipset, expansion buses, and onboard logic.
The 24-pin ATX main connector provides the primary DC voltage rails (+3.3V, +5V, +12V) needed for general motherboard operations.
2
Identify auxiliary CPU power delivery requirements
Recognize that dedicated CPU power is delivered via a 4-pin or 8-pin EPS/CPU power connector located near the CPU socket.
Modern CPUs demand dedicated +12V power conditioning separate from the main motherboard 24-pin connector.

Key Concept

Motherboard Power Connectors (ATX 24-pin and EPS12V)
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Topics

Motherboards Form Factors and Connectors

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