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:'''Using a 24 pin power connector on a 20 pin motherboard'''The 24 pin male power connector can also be used on a 20 pin motherboard by allowing the four extra to hang off the side, given there is room (''one one motherboard example a capacitor is in the way.''):'''Using a 20 pin power connector on a 24 pin motherboard'''Technically this is also possible to do, however, you risk overloading the 20 pin connector. It is possible to do this because the additional 4 connectors on a 24 pin power connector supply additional voltage to the motherboard into common circuits. Without the additional 4 connectors, you will be drawing more power than the maximum rating through the 20 pin connector which will cause it to overheat.[[Image:PowerSupplyVoltageDataforPersonalComputers11.png]]==== Technical Notes ====:'''Using a 24 pin power connector on a 20 pin motherboard'''The 24 pin male power connector can also be used on a 20 pin motherboard by allowing the four extra to hang off the side, given there is room (''one one motherboard example a capacitor is in the way.''):'''Using a 20 pin power connector on a 24 pin motherboard'''Technically this is also possible to do, however, you risk overloading the 20 pin connector. It is possible to do this because the additional 4 connectors on a 24 pin power connector supply additional voltage to the motherboard into common circuits. Without the additional 4 connectors, you will be drawing more power than the maximum rating through the 20 pin connector which will cause it to overheat.[[Image:PowerSupplyVoltageDataforPersonalComputers11.png]]:'''Hot-Starting and ATX Power Supply Not Connected to a Motherboard'''The old AT style power supplies could easily be turned on when not connected to a motherboard because the switch was mechanical. ATX power supplies are electronically switched via the motherboard. It is possible to turn on an ATX power supply when not connected to a motherboard.To turn on an ATX power supply not connected to a motherboard short between the green and black wires on the 20 or 24-pin connector, with a paper clip or piece of wire.[[Image:PowerSupplyVoltageDataforPersonalComputers12.png]]