This is great if your using ATX Power supplies and you need a few more PCIe power connectors. Maybe you are powering PCIe powered Risers or GPUs that take two power connectors, these will come in handy.
We have two variants of these cables. One is for 8Pin PCIe Power cables. These are best and will handle a bit more power, they work great with ATX power supplies that have 8 pin plugs that to attach to. We also have a variant that can plug into a 6 Pin PCIe cable. These are good if you are pulling from a breakout board that only has 6 Pins at the source anyways.
WARNING: Do make sure to not overload the cables of your PSU by connecting too much up to one connector. A good tip is to check they cables and especially the connectors if any are warm or hot to the touch then you are loading them too much.