Mac Pro 5.1 PCIe Link Width
I just bought an x16 Asus nvme controller and I dropped it in to a x16 slot and I only got x4 link width and 2.5GT speed. It will only read one of my 2 nvme drives but the point of the x16 card is that it's supposed to read all drives.
I tried changing slots with the video card and still don't work.
Can anyone help getting my X16 slot run at x16 speeds?
Thank you
Kristoffer
Mac Pro, macOS High Sierra (10.13.1)