Did Dell change its pinout order for the cpu fan header as it crossed from gen 4 to 5?

i fried my 7040 fan and had a 9010 at work that was on its way out the door so i snagged the fan. I noticed that the 9010 fan connector order was BLUE BLACK RED YELLOW

On the 7040/5040 fan connector, the order is  BLACK RED YELLOW BLUE

So are just the cable colors different or are the motherboard pin functions in a different order?

Any help appreciated. Ive seen alot of fan discussions but cant find much in the way of 7040 fan pinouts