Question Alienware X51 R2 & GTX 1060 Cable

[Remark]

Hello,

I got a GTX 1060 from my brother.
I tried to fitit into my Alienware X51 R2.
It fits in the rack and all but if I plug the 6-pin PCI Express then it does not fit.
The cable create a little bump that is too big for the card to then slide in.

Are there an 6-pin PCI Express cables that are thinner?
The one that comes with the PC is like 3mm too thick.

 

[Barty1884]

You can't wedge the connector? Could you post a pic of the issue? Which 1060 model, specifically?

What PSU is in that R2?