M vs : What's the Difference?

Furthermore, other expansion slots run under a PCI Express interface with smaller form factors, such as mPCIe and slots There is one PCIe

PCIe x1: This is the smallest PCIe slot and has a single lane for data communication Max Bandwidth per Lane: 2 GBs; Max Bandwidth x16 Slot: 32 GBs

what is the best online slot website 2 is a slot that can interface with SATA , PCI Express

what is a mail slot is a form factor for SSDs that's shaped like a stick of gum These SSDs are generally faster but more expensive