PCIe vs PCIe NVMe SSDs: What's the difference?

2 is a form factor specification for internally mounted SSDs Formerly known as Next Generation Form Factor , supports PCIe, SATA and USB interfaces

2 specification supports NVM Express as the logical device interface for PCI Express SSDs, in addition to supporting legacy Advanced Host Controller

nvme slot types 2 SATA SSD weighs between 5-10g and comes in various shapes and sizes The most common dimensions are 22mm wide and 80mm long, with a thickness

nvme 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