Adapter from PCIe to PCIe Gen 3 (NVME) or M.2

I have a computer that won’t POST. I purchased a POST card tester that has various connection options which includes the PCIe connector. However, my Dell XPS 15 9550 has a new PCIe Gen 3 NVME or M.2 connector for the Wifi card or the SSD card. I am looking for an adapter, hoping one exists, so I can plug MALE connector into PCIe which will then plug into FEMALE PCIe Gen NVME or M.2 connector. Does something like this exist? I thought I found something on Amazon but it was $100, certainly there has to be something cheaper out there. Alternatively, if there is a POST card tester with M.2 or NVME then I can purchase that.