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,

EZ-Latch Click： heatsinks with screwless design; EZ-Latch Plus：PCIe x16 slot & slots with quick release design; UC BIOS：User-Centred intuitive

m2 slot Client PCIe NVMe SSDs typically only use the 2280 form factor because its slim design allows it to easily fit into desktop and notebook PCs Enterprise-

m24 slot Utilize an available PCIe x4 expansion slot for the installation, removal, or interchange of PCIe SSDs The drive tray accommodates M-Key NVMe SSDs