FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -EPS power supplies have a 24-pin motherboard power connector and an eight-pin +12 V connector. The standard also specifies two additional four-pin 12 V connectors for more power-hungry boards (one required on 700–800 W PSUs, both required on 850 W+ PSUs).

Detailed explanation-2: -A P1 24 pin or ATX 24 power connecter is the standard motherboard connector. The P1 24 pin is made of Molex 39-01-2240 connector. These connectors main use was to provide extra power to PCIe cards, and have more than one power wire. The four extra pins it has are lines for higher current capacity.

Detailed explanation-3: -Any power supply conforming to ATX version 2.0 or above should have a 24-pin connector. A 24-pin power supply should work with older motherboards that only have a 20-pin connector.

Detailed explanation-4: -An ATX power supply provides a number of peripheral power connectors and (in modern systems) two connectors for the motherboard: an 8-pin (or 4+4-pin) auxiliary connector providing additional power to the CPU and a main 24-pin power supply connector, an extension of the original 20-pin version.

Detailed explanation-5: -An ATX style connector is a replacement for the older P8 and P9 AT style connector. It is one of the largest connectors inside a computer. It connects a power supply to an ATX style motherboard. As shown in the picture, the 20-pin cable is a multi-color cable and may be labeled as P1.