Intel Optane SSD 900P Series - Connector Notes; Mini-SAS HD;M.2 Connector Type

Note
Make sure the electrical connection to the mini-SAS HD/M.2 connector is PCIe, not SAS,
or SATA. NVMe SSDs only support PCI Express* signals.
The SFF 8643 connector is also called a mini-SAS HD connector.
The SFF 8639 may also be called a SATA-express* drive connector with more signals.