Slot Types

2 SSDs are keyed at both M and B positions, so they can fit in SATA slots and PCIe , even if they might not work in the latter NVMe SSDs are keyed only

22802242 M-Key x 2, 30423052 B-Key x 1 + Micro SIM Slot x 1, Mini Mini PCIe Slot x 1 Micro SIM Card Slot x 1 ( B-Key or Mini

m2 vs nvme slot 2 socket, closest to the CPU socket and top PCI x16 slot If, and only if, you use a SATA SSD in this socket, SATA port SATA6G_2 is disabled If you use an

m2_1 slot slot supports PCIe NVMe or M Key with NVMe This SSD is not compatible with Mac Product information Read Speed, ‎3500 Megabytes Per Second Write Speed