Question - NVME SSD on Sata slot

Question - NVME SSD on Sata slot m2 sata vs nvme slot drives are also much smaller than SATA SSDs, almost like a strip of gum, having a flat profile that simply sits on top of m2 expansion slot Two types of M2 SSD

m2 expansion slot The real advantage of the PCIe interface over SATA is the ability to transmit data on up to four lanes, whereas SATA only has one When combined with an NVMe

m2 slot 2 standard contains variants with up to four PCIe lanes, one SATA 6 Gbs and or one USB port So it is possible to connect PCIe as well as SATA SSDs  Which partitions or drive letters are connected to which Port? ports individually like I can with the SATA ports I do have ALL