nicevk :
Thanks that was what i wanted to know. Could i ask why? You can't add more pci-e slots via sata ports
because if you could add an pci-e slot via an sata cable, you can put an network card as example on the sata connector which doesn't make sense. the source should go to the motherboard directly and not via another way.
i'l explain.
image yourself in a car. the car is your photo data, driving to a destination. there are 2 roads. one normal road where is says motherboard and the other says storage, but storage is a road where only bikers are allowed. you take the road to the motherboard, because the other road is not meant for the car (your photo).
maybe very childish, but should make it clear as example