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Difficulty: MediumExpansion Cards and Power Supplies

A technician is configuring internal hardware components and power connections for a newly assembled desktop system. Match each power supply connector or expansion slot standard on the left to its correct interface description or application requirement on the right.

  • EPS12V 8-pin connectorProvides dedicated +12V power to the motherboard voltage regulator module for the CPU
  • PCIe 6+2 pin connectorDelivers auxiliary +12V power directly to high-draw expansion devices such as graphics cards
  • PCIe x1 expansion slotAccommodates single-lane, low-bandwidth peripheral cards such as Wi-Fi adapters or sound cards
  • PCIe x16 expansion slotProvides maximum data bandwidth and physical length for dedicated video cards

Answer

EPS12V 8-pin connector matches dedicated CPU power; PCIe 6+2 pin connector matches auxiliary expansion card/GPU power; PCIe x1 slot matches single-lane peripheral cards; PCIe x16 slot matches high-bandwidth video cards.
Each connector and expansion slot is correctly matched to its system role: EPS12V powers the motherboard CPU socket region, PCIe 6+2 pin supplies extra power directly to expansion cards, PCIe x1 houses low-speed peripheral cards, and PCIe x16 supports high-speed graphics cards.

Step-by-Step Solution

1
Distinguish between power supply cabling standards for processing units versus peripheral expansion cards.
EPS12V delivers power to the processor VRM, while PCIe 6+2 pin supplies auxiliary power to high-TDP PCIe expansion cards.
Keying and voltage wiring differ between EPS12V and PCIe power connectors to prevent incorrect insertion and electrical damage.
2
Differentiate PCIe slot capabilities based on physical throughput and lane allocation.
PCIe x1 provides a single lane for low-bandwidth add-in cards, whereas PCIe x16 provides 16 lanes for maximum data bandwidth needed by dedicated graphics cards.
PCIe throughput scales directly with the number of operational data lanes.

Key Concept

Power supply connector keying specifications and PCIe expansion slot bandwidth applications.
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Topics

Expansion Cards and Power Supplies

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