Industrial SATA SSDs Solid State Drives

I inserted an NVME SSD in a SATA slot on a motherboard sata m 2 slot AFIK the slots are SATA only, no NVMe it say nvme on sinology web site Comment sata m2 slot In practice, the SATA SSDs I've come across always have two notches in their connector They are 'B and M keyed' as per the standard In

sata slot Can I use an M2 SATA in an NVMe slot A slot that can do SATA will have the M key andor B