1, the two-wire cooling fan, the power line positive red and negative black, boot, the motherboard can not control the speed of the cooling fan, do not know whether the current cooling fan is running.
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2, three-wire cooling fan, power cord positive red, ground black, speed measurement line yellow. The speed measurement line is a signal that transmits a signal to the motherboard to inform the current speed and operating status of the cooling fan.
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Can a three-wire cooling fan replace a two-wire cooling fan? Yes, the two-line cooling fan heat socket, plug the three-line cooling fan, absolutely no problem, the third control line is not connected.
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Can two-wire cooling fan replace three-wire? No, a three-wire cooling fan socket with a two-wire cooling fan is basically impossible, because the two-wire cooling fan is short of a signal line, and the general motherboard detects the signal on the \"speed measurement line\". If the signal is not received, the cooling fan is faulty and cannot work normally.
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The two - and three-wire capacitors have the following differences: Different uses: the two-core wire is mainly used for single-phase circuits of 220 volts, and the three-core wire is mainly used for three circuits of 380 volts.
Different load: When the online core section is the same, the load capacity of the three-core wire is higher than that of the two-core wire.
Different types of wire: two-core wire is generally neutral and live wire, while three-core wire is generally neutral, live wire and ground wire.