How To Jump Atx Power Supply. Manually jump ON an ATX power supply without a motherboard or power button. Rather than risk your parts to a leak you can simply unplug all of your components from the PSU with the exception of the 24 pin and the connector required for powering your pump Molex 4-pin is the standard and connect the adapter to jump start the PSU.
Server PSU should always power up when power is detected with the proper breakout board is installed and the BIOS state will always power on your normal ATX PSU. Make sure that you jump the correct pins when testing your PSU. When this jump is broken the PSU shuts off.
If your system is having issues turning on you can check if your power supply unit PSU is functioning properly by performing a test.
To turn on an ATX power supply that isnt connected to a motherboard use a wire or paper clip to short the green wire PS_ON to any one of the black wires COM. The switch features a 24-pin female Molex connector that hooks up to your PSU to spoof the motherboard connection. Press question mark to learn the rest of the keyboard shortcuts. Also be aware that some of the older Dells older than Dimension 4300 did use proprietary powersupplies that are not wired the same as the ATX standard.
