mhijazi
Hello,
 
I had a setup with 2x 1080 Ti and a WD SN750 Black with heatsink installed in the lower m2 slot (PM2). I recently installed another M.2 of the same type in the upper slot (PM1). Both disks are showing fine with no problems from windows and from SSD dashboard. Both are at PCIe 3 x4 as per the SSD dashboard. However when I go into the BIOS, in the graphical representation of the PCIe lanes, I see two x8 for the GPUs, and one x4 for one SSD. but the next slot , Is just highlighted and not showing the speed. I can see the drive information from NVMe information with no issues.
 
Just wondering if this is a bug or something is not right in my settings. Disks are seen from BIOS and from Windows. Just the PCIe lane is just highlighted but no speed is detected.

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mhijazi
Hello. Thanks for your reply. No I am not using x4 PCIe slot. I only have 2x 1080 Tis which are installed in the PE 1 & PE 2 and 2 NVMe SSDs on PM1 and PM2.

coolmistry
 
Ah I got it 
That strange... so I have check on my it just 2 Graphics card show X8 and nothing for X4 mmmmm
Have you try reset your BIOS setting back default and try again setup your current setting!