For reference.
Both these PCIe adapter cards are working great in the 7.1 nMP for single NVME’s.
https://www.amazon.co.uk/gp/product/...?ie=UTF8&psc=1
Downside: will only take single sided NVMe’s which means Samsung or Western Digital.
Also the Lycom DT-120 although you’ll need a separate heatsink for the NVME.
If you have more that one dongle, this hub works great in the internal USB slot.
https://www.amazon.co.uk/gp/product/...?ie=UTF8&psc=1
The mini 6pin power cable that came with my HDX card works fine. You don’t need the Belkin cable kit. My HDX card is in slot 6 (x8) and worked first time, as did the three other PCIe cards.