Here's a quick guide of how it works for those that can't view the video at this exact moment:
- Completely unplug and power down your PSU.
- Locate Clippy. Stick one end of Clippy into the slot with the green wire, one into a slot with a black wire.
- Set the cable aside. Plug the PSU in and flip the switch. It should spin up.
- If it doesn't spin up, it probably needs to be put under some kind of load -- connect a fan or two (or a HDD) and see if it works now.
The beauty of this is that you don't need to hook it into a computer. It also helps isolate issues when troubleshooting - it doesn't definitively test a PSU as good or bad (nor is it meant to), but it does help figure out if a power failure or startup problem is a result of the motherboard, PSU, or something else.
As always, fans on our facebook page and YouTube subscribers see the video before we post it here, so if you want to know about these ASAP, it's best to like us and subscribe (respectively).