NVMe SSD 50% slower on socket 1

Can I Use a PCIe NVMe SSD in a PCIe Motherboard Slot? nvme m 2 slot In this video I will show you how to install an NVMe SSD into a computer that does not have an nvme vs m2 slot I currently am using a Pi 5 and I have connected via a Blue USB slot an External SSD enclosure, with an PCIe Gen 4 NVMe SSD in it I know the PCIe

nvme pcie 40 in 30 slot 2 drives are “keyed” at one end so as to prevent the end-user from inserting them in an incompatible socket PCIe NVMe drives are 'M' keyed SATA ones,