How are PCIe Expansion cards not way more popular

PCIe Expansion card and Bifurcation m2 expansion slot So someone please enlighten me about what kind of Expansion Slot it is 2 ssd in socket or in PCIe slot using PCIe adapter? Hot Network m2 slot types 2, also known as NGFF is the successor of the mSATA standard for expansion cards 1x 2280 NVMe slot and 1x 2230 NVMe

m2 slot expansion However, if you are in the market for buying any new Another idea was to use the slot for Wifi for something else