Dell PowerEdge R930 Backplane Problems

Hi,

i got myself a Dell PowerEdge R930, it had the 24x SAS Backplane, but i wanted to use NVME Drives in the front.

I already have a R730xd with 4x PCI-E SSDs in front, but the R930 can take 8 NVME drives, so i got myself a fitting Backplane for the R930.

Dell part number 0JXR3K.

And of course, a second PCI-E extender card.

I put the Adapter Cards in slots 4 and 7, they get detected by the server.

Cabled everything according to the picture in the Manual:

Problem is: The server complains that ports A, C, D (recognized by the Server as A0,A1,B1) are cabled incorrectly. The "B" ports, recognized by the server as "B0" seem to work .. but the attached PCI-E-SSDs don´t get recognized.

I tried booting the server without the cables and the server correctly recognizes that the cables are not attached at all and says "not connected".

I can´t wrap my head around that, i can only imagine the backplane being faulty.

I tried every combination of connecting the cables, it complains every time, that the cabling of A,C,D is wrong.

The SAS Ports on the backplane work fine, disks are getting recognized no problem.

The Cables work totally fine in the R730xd, also i tested both of the PCI-E extender cards, they both work fine.

The SSDs (Intel P4800) also work fine in the R730xd.

Is there anything im missing or did i get a faulty backplane from the ebay seller? Its supposed to be "new and unused". I couldn´t see signs of use on it.

Im really out of ideas at this point.

Any suggestions?