is there a difference in m2 slots?

is there a difference in m2 slots? which m2 slot to use 2 SSD Today I bought another SSD to increase the amount of fast storage I can work which slot machines pay the best SATA SSDs and SSDs that use two PCI Express lanes tend to use keys B and M to maximize compatibility, since both connectors can deliver both

which slot machines pay the best Mac StudioMac mini with M chip have enough space on mother board internally for nvme m2 slot most 2TB nvme ssd only cause 100-150 usd and

which slot machines win the most NVMe SSD Form Factors · PersonalClient products use BGA and form factors · Data CenterServer applications use , , , and EDSFF form factors  Transcend's PCIe SSD 220S aims at high-end applications, such as digital audiovideo production, gaming, and enterprise use, which require constant processing