Latitude 7389 - installation of 2nd SDD

Hallo,

I have the following question regarding the Latitude 7389. E.G. on the German Dell Website it is possible to order the laptop with a second m2-PCIe SSD. The Bios provides the option to activate/deactivate 2 different ssds as well. Because of several reasons I ordered the laptop with one SSD and bought an additional SSD elsewhere.

Unfortunately, I am not able to install the second SSD. There is no connection on the mainboard where the second ssd could be connected? The owner's manual does not give any advice, too?

Any ideas/help?

kind regards
Jay Siquelius