Pi 5 PCIe Gen 3 SSD Performance vs USB 3

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,

Hi, 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

m2 sata slot B650M-HDV · Build for The Most Advanced PC · Optimized VRM Design · DDR5 Memory with Protection Circuit · Reinforced Steel Slot

m2 pcie slot The M2 Ultra chip connects to the PCIe slots through a PCIe switch and provides 24 lanes of gen 4 bandwidth Pool A provides a maximum of 16