power connector

Would i have any problems connecting a 20pin power supply to a 24pin motherboard.
Thanks for any advise jhad

I believe that the extra four pins are there to spread the supplied voltages (or amperage draw?) over more wires. You should be able to use a 20-pin connector without any problems and I shouldn't have any adverse effects.

However, you can purchase an adapter (20-pin female to 24-pin male) but as far as I know this won't actually be any different to just plugging it in.

Just make sure you offset the plug to one side instead of the center. :)

Norman's correct, you should find the standard 20 pin will fit and is enough to power your system, although if it is high-end you probably want to start thinking about upgrading your PSU. Don't think you'll have a problem aligning the connector properly, they're designed so they only fit one way.

thankyou for the reply i connected to the motherboard but a problem im now having is the board powers up as soon as i plug the power supply in even with the power off switch disconnected.
Thanks for any help jhad

Check that the power switch jumper on the motherboard is in the right place. Along the bottom (usually) of the motherboard there should be a small collection of wires going into the board that control the power/reset switches and power/HDD LEDs. Use your motherboard's manual for guidance. Try either re-seating them or taking them out before you plug in the PSU to see if it still turns itself on.

I connected all the wires from the panel to the motherboard then disconnected them ive even lifted the motherboard out of the case and had only the power supply connected as soon as i plug into the back of the power supply it powers up.
The only way i can stop it is by pulling the plug out again.
Thanks again jhad

So it still turns on when the only thing connected to the motherboard is the power supply?

It could be a setting in the BIOS. When everything is connected back up, turn on the computer and look for the option to go into setup as it's booting (usually a key press such as f12). Once in there, look for some sort of power management settings. Sometimes there is an option regarding power loss to the system. Try setting this to OFF.

If it's ON, when the computer shuts down due to a power cut it will turn itself back on again as soon as the power returns, which may be what's happening. If this is the case it should also stop doing it if you let it boot into Windows and then shut down normally.

Thank you very much that seems to have solved the problem thanks again jhad

No worries. Good to hear. :)