for those people who have got an old motherboard, but a newer power supply and want to join the two together.... this product is what you want. (and it's at price you probably want too!)
It's not complicated, or difficult to put into your PC. the wires between the two connectors are quite inflexible, so if you are trying to make sure that the air can flow freely, you might want to try and attach it /bend it so that it isn't directly where you don't want it.
Both connectors have a clip, which gives a good click when you have properly put it in.
I've had no problems, and am typing this review on the pc is is in :)