Final answer:
The ATX form factor motherboard uses a 20-pin connector for its main power connection, which has been largely superseded by 24-pin connectors in newer models. Power supplies often support both types with a detachable segment. Checking motherboard specifications is crucial for compatibility.
Step-by-step explanation:
The ATX form factor motherboard is the one that typically uses one 20-pin connector for its main power connection. This type of connector was standard for older motherboards and has been largely replaced by the 24-pin connector in more recent ATX designs. The 20-pin connector supplied power to the motherboard's main components, such as the CPU, memory, and expansion cards.
When building or upgrading a computer, it's important to match the motherboard's power connector with the power supply. Many modern power supplies are designed to be compatible with both 20-pin and 24-pin connectors, featuring a detachable 4-pin segment to fit either motherboard design.
It is also worth noting that other form factors, such as microATX and Mini-ITX, may also use a 20-pin or 24-pin connector depending on the specific motherboard design and the era it was produced. Always check the motherboard's specifications to determine the correct power connector type.