If you have ever tried to run a crypto currency miner like Antminer or Goldshell Miners you probably notices it will not turn on. this is because it requires a jumper adapter for the 24pin to start the power supply. This jumper will solve your problem! Just plug the adapter to the 24pin connector on your power supply and you're good to go. Note: DO NOT PLUG the adapter while the power supply is connected to power. First unplug the power cable from your power supply and turn the button to off (if you have an on/off button) then plug our Jumper adapter, then the power cable and finally turn the power supply on.