Why do modern motherboards have so few PCIE slots?

Can someone explain me the PCI-E slot variations & sizes of what does pcie slot look like How do PCIe slots work? · PCIe x1: These are the smallest PCIe slots, used for almost any other cards like average network adapters and USB what is the best way to measure service level for timeslot delivery_ Yes, it works just fine, obviously it's only work at x4 speed I would check whether the x16 slot can handle the power load of the

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