In this case, you can't go wrong. There is only one green wire in the motherboard power block, and any black wire is a ground wire. One caveat. You may come across a power supply that has a problem with this because it needs a continuous "on" signal in order to stay on. In which case you will need to get the tester module. I have come across this on one occasion, and I am not sure if it was the board, the PS or the momentary switch that was the cause. You will have to try it and see. Rode The NOSPIN Group http://freepctech.com >I was referring to the ATX big power plug that would go to the Motherboard. >I have not looked carefully at the PS yet as I am still in the research stage. >(I did not want to open the cardboard box, making a return easier if I found >this was not a good idea... <grin>) > > Rick Glazier > >From: "Mark Rode" <[log in to unmask]> > > You mean the green signal, and any black ground wire correct? Yes this will > > work. If you are worried you can buy a device that will do this for you. > > They are ATX PS testers.... about 12 bucks at Cyberguys. > > > > At 05:45 PM 3/7/2004, you wrote: > > >Will an ATX power supply "start up" if there is no motherboard? > > >I want to house some hard drives in that case and run them... > > >I read if I short pin 13 & 14 it will start and run. > > >Is this safe and reliable? > > > Rick Glazier PCBUILD maintains hundreds of useful files for download visit our download web page at: http://freepctech.com/downloads.shtml