Using an extender is just like if you snipped all hte wires and sodlered longer wires to it. The extender does what it is suppose to do...make your ATX cable longer in instances where it doesnt reach for whatever reason from the psu to the motherboard.
If you wanted higher rails on the psu, you would still need to modify the extender...which is the point I thought. You buy the extender, make sure it has all the wires your atx connector has, then mod the extender versus the cable bundle from your psu so that you do not kill the psu warranty.
