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

What's the bandwidth and form factor for PCIe x1 x4 x8 and x16? pcie slot length Mini PCIe cards are divided into two different sizes, full-size cards, and half-size cards Mini PCI Express cards measure in at 30 x pcie 4 card in pcie 3 slot *When using a PCIe x16 add-on card, the length of the card must not exceed 167mm or inches Automated Inspection Machine Application

pcie 40 in pcie 30 slot multi-mode XXX – Cable length in meters Additional information Weight, kg Dimensions, 27 x 21 x 6 cm Transceiver multi-mode transceiver