![]() ![]() 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. ATX12V-compliant power supplies, although they have 24 pins, can actually be used on an ATX motherboard that has a 20-pin connector. (Power is still supplied after shutdown)ĩ. One situation where the pin count comes into play is when deciding if a particular power supply works with your system. 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. and connect black GND from DC-DC with black GND on the 8-pin connector). The only way is to use a step-up DC-DC converter ('purple +5V' from the power supply > DC-DC > connector purple +5V. The quality of its power supply is directly related to the stability of the computer system.ĥ. The +12V vsb powers up the circuitry on the mainboard and is 'waiting' for a power-on signal (power switch on PC, or lan). Red (5V): The working voltage provided to CPU, PCI, AGP, ISA and other integrated circuits is the main working power supply in computer. If several parts share a common ground wire, its work efficiency will be greatly reduced. This 20-Pin to 24-Pin ATX Power Supply Adapter Converter Cable will allow you to connect a standard 20-Pin ATXPower Supply to a 24-Pin ATX Motherboard Power. 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. Blue (-12V): Provides logic judgment level for serial port. 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. What is the purpose of the 8 pin ATX 12v Power Connector plug-in at the top of my mobo (noob question). There are nine kinds of colors on connector as the following picture and they have different functions.ġ. 1 Hi, I am working on my new build, this is a general info question. 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. ![]()
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