I inserted an NVME SSD in a SATA slot on a motherboard

Installing an M2 SSD into an Optiplex 7040 m 2 sata slot ATP SATA SSDs are B+M-keyed , while NVMe SSDs for PCIe x4 lane are M-keyed m2_1 slot As some motherboard host connectors only accommodate M-key SSDs and others only B-key ones, a popular pin design for SSDs these days is the B+M key,

m2 slot screw When using the PCI bus instead of the SATA bus, devices can transfer data at anywhere from 50% to approximately 650% faster than standard