There are PCIe to U.2 adapters: PCI-e x4/x8 to SFF-8643 cable or PCIe cards with U.2 connectors on them (drives mount to card). There are also cards that connect to NVME m.2 slots and connect to a SFF-8643 cable.
Be careful since these are...
Combo that I would like to ship off. It is boxed up and ready to go for the price of shipping (likely $25-35). PM your zip code please.
Spoken for and shipping soon
Heatware is under compcons
Edited to remove unsold items that were either...