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Easiest is a u.2 to m.2 converter,or if you have a spare pci slot, u.2 to pci-e.
AFAIK, u.2 is just a form factor, like m.2. Both are...
From my quick googling, seems like 40 ports are available, and 10 ports are purchased per license. Could be wrong...?
HP T730 Thin Client PC AMD RX-427BB 16GB SSD 4GB RAM - No OS 709951016084 | eBay
Some of these cropped up at $130 shipped. Enjoy!