What is an slot on a motherboard used for?

slot m2   Dan slot phones tecno

2 slot, its compatibility with your new drive will depend on whether the slot is compatible with B Key drives, M+B Key or M Key drives

you can put any NVMe drive into any slot so, Supports you can put any NVMe drive into any slot so, Supports

betcoin slot expansion slot is the specification for internal expansion cards on computers' motherboards Intel first introduced slot in 2012 as Drives that use NVMe were introduced in 2013 to attach to the Peripheral Component Interconnect Express slot directly on a motherboard