SATA SSD vs PCIe SSD - What's the difference?

Dell PCIe NVME Gen 4x4 Class 40 2280 Solid State Drive

2 is a form factor that can take the form of a SATA SSD or a PCIe NVMe SSD Image of Micron M600 SSD drives Micron Technology M600 SSD form factors (left to

pcie slot dimensions Enterprise SSD and ; Compliant to PCIe Gen 4x4 lanes, NVMe interface; User density ,

pcie 4 in pcie 3 slot ssd The PEDET should be irrelevant It is pulled up by host and it selects between SATA and PCIe mode in Key M based on insertion of SATA or