Amazon.com: JEYI NVMe M.2 to 5 Sata Adapter, Internal 5 Port Non-RAID SATA III 6GB/s M.2 NVMe Adapter Card for Desktop PC Support SSD and HDD : Electronics
hardware - Force renegotiation of PCI Express link speed? x2 card reverts to x1 width - Server Fault
SOLVED] - NVMe SSD slower when in M.2 slot vs. when in PCIe x16 slot | Tom's Hardware Forum
Understanding M.2, the interface that will speed up your next SSD | Ars Technica
PCI Express Link Speeds and Bandwidth Capabilities - PCI Express 2.0: Scalable Interconnect Technology, TNG
5 Slot M.2 B-key SATA Base PCI-e 3.0 x2 Bandwidth Controller Card Require x16 Slot