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Question

Difficulty: MediumExpansion Cards and Power Supplies

Match each expansion card slot or power supply connector to its primary specification and functional role within a PC build.

  • PCIe 6+2 pin connectorSupplies auxiliary power up to 150 W150\text{ W} directly to high-draw expansion cards like GPUs
  • EPS12V 8-pin connectorDelivers dedicated +12V+12\text{V} power directly to the motherboard CPU socket region
  • PCIe x1 expansion slotProvides a single lane of serial communication for smaller cards like Wi-Fi or sound adapters
  • Molex 4-pin connectorLegacy connector providing +5V+5\text{V} and +12V+12\text{V} power to older drives and case accessories

Answer

Each hardware interface correctly matches its standard operational specification: PCIe 6+2 pin supplies GPU auxiliary power up to 150 W, EPS12V supplies dedicated CPU power, PCIe x1 provides a single communication lane for smaller cards, and Molex 4-pin provides legacy peripheral power.
Each connector and expansion slot is paired with its precise voltage, wattage capacity, line configuration, or target target hardware component.

Step-by-Step Solution

1
Analyze expansion card power connectors.
The PCIe 6+2 pin connector is designed for graphics cards requiring auxiliary power beyond the 75 W motherboard slot limit.
Combining the 6-pin block with 2 additional ground pins allows it to plug into an 8-pin PCIe power socket delivering up to 150 W.
2
Distinguish CPU supplemental power from PCIe power.
The EPS12V 8-pin connector plugs near the processor socket to feed power to the CPU voltage regulation module.
EPS12V uses a different keying and wiring pinout (+12V on top row, ground on bottom row) than PCIe 8-pin connectors.
3
Identify expansion slot throughput and legacy power standards.
PCIe x1 handles low-bandwidth expansion cards using a single lane, while Molex 4-pin supplies legacy +5V and +12V power to peripheral components.
Understanding slot lane counts and connector pinouts ensures proper hardware installation and power distribution.

Key Concept

Expansion card auxiliary power requirements and connector pinout standards
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Topics

Expansion Cards and Power Supplies

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