What's the bandwidth and form factor for PCIe x1 x4 x8 and x16?

What are the top uses of PCIe x1 Slots? pcie slot height Also there is Double and Triple PCIe cards Those cards fill corresponding PCIe slot count on equipment interface panel pcie 1 slot The Mini PCI cards are × mm, the full height Mini PCIe cards are 30× mm, and half height Mini PCIe cards are 30× mm 2016 onward Most

pcie x 16 slot Also there is Double and Triple PCIe cards Those cards fill corresponding PCIe slot count on equipment interface panel