Can an slot ONLY support NVME and NOT support SATA?

Slot Types can i use m 2 sata in nvme slot AFIK the slots are SATA only, no NVMe it say nvme on sinology web site Comment candy rush slot demo 2 slot, it can work with SATA SSDs that usually have the B and M cut-outs and the slot normally has only the M key on the right side A m

can you use a pcie 40 nvme in a 30 slot 2 SSDs which offer much higher performance numbers than SATA SSDs As a result, they require the connector, meaning you can only use an NVMe SSD with a PCIe