![]() ![]() Yellow (+12V): Generally, it provides power supply for spindle motor and seek motor of hard disk, optical drive and floppy drive, and provides working voltage and serial port circuit logic signal level for ISA slot. (Power is still supplied after shutdown)ĩ. Purple (+5VSB): ATX power supply provides + 5V 720mA power supply to the motherboard through pin9, which provides power for WOL (wake up on LAN) and boot circuit, USB interface and other circuits. White (-5V): It provides a method to judge the level for logic circuit and is not essential.Ĩ. Gray (PWR_OK): Monitoring line, which plays a signal feedback role.ħ. When it is short circuited to the ground, it will start the power supply.Ħ. When the signal level of the port is greater than 1.8V, the main power is off If the signal level is lower than 1.8V, the main power supply is on. Green (PS_ON): Through the electrical level control power on. The quality of its power supply is directly related to the stability of the computer system.ĥ. Red (5V): The working voltage provided to CPU, PCI, AGP, ISA and other integrated circuits is the main working power supply in computer. a 6-pin AUX power connector recommended by V2.03 of the ATX Specification for motherboard’s requiring 250W or 300W supplies. a 4-pin +12V power connector required for all Pentium 4 processor-based systems. If several parts share a common ground wire, its work efficiency will be greatly reduced. Power supply units can have up to three power connectors: a 20-pin main power connector the standard ATX power connector. Tips: ATX power supply is divided into several parts, each part must have a ground wire. Black (0V): The power line is ground line, and other power lines need to be used in conjunction with it to supply power for the computer. The required current is small, generally less than 1 ampere.ģ. The absence of that connector indicates that it is a standard ATX power supply. Blue (-12V): Provides logic judgment level for serial port. The presence of the 4-pin +12V connector indicates that a power supply is ATX12V. The voltage requirement is strict, the output is stable, the ripple coefficient is small, and the output current is large, which needs more than 20 amperes.Ģ. Orange (+3.3V): Provides power for memory. There are nine kinds of colors on connector as the following picture and they have different functions.ġ. What is the pin of different colors on connector for Power the fan, monitor and control the fan speed of CPUĢ. Power to old IDE devices, such as hard disk and optical drive of IDE connector ![]() Power hard drives and optical drives (15 pin, 5-wire) ![]() There are six kinds of common connectors. Derived from the newer EPS standard, the 24-pin main connector is typically divisible. What is the pin of different colors on connector for These typically include a 24-pin, an 8-pin (or 4-pin) CPU, and a different 8-pin (or 6-pin) for PCIe graphics. ![]()
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