The _____ provides voltages of 3.3V, 5V, and 12V to the motherboard.

The _____ provides voltages of 3.3V, 5V, and 12V to the motherboard.

• A. ATX12V P1 Connector
• B. PCIe Power Connector
• C. SATA Power Connector
• D. Molex Connector

Answer: (A)

The main power input from the power supply to the motherboard is the ATX main power connector, often called the ATX12V P1 connector. It carries the three rails the board needs: +3.3V, +5V, and +12V, which power the motherboard’s logic, memory, and other circuits. A separate 12V CPU power connector supplies extra current specifically to the processor, but the broad voltages feeding the board come through this primary 24-pin connector. Other PSU connectors—PCIe, SATA, and Molex—serve devices or expansion cards, not the motherboard’s voltage rails.

The main power input from the power supply to the motherboard is the ATX main power connector, often called the ATX12V P1 connector. It carries the three rails the board needs: +3.3V, +5V, and +12V, which power the motherboard’s logic, memory, and other circuits. A separate 12V CPU power connector supplies extra current specifically to the processor, but the broad voltages feeding the board come through this primary 24-pin connector. Other PSU connectors—PCIe, SATA, and Molex—serve devices or expansion cards, not the motherboard’s voltage rails.