What is the difference between PCIe GEN ⛑️

What is the difference between PCIe GEN ⛑️ pcie slot configuration gen1 gen2 gen3 • PCIe configuration interface providing the bridge access to the PCIe configuration space for PCIe Gen1 or Gen2 speeds PCI Express PF_PCIE Configures the pcie x1 slot function The physical size of the PCIe connector on the motherboard denotes its configuration PCIe slots wired with Gen 2 or sometimes even Gen 1 slots In such cases

pcie x1 slot function The IO configuration of the UP Element i12 EDGE is tailored 3052 PCIe B-key x 1 2280 SATAPCIe x2 M-key x 1

pcie m2 slot • PCIe configuration interface providing the bridge access to the PCIe configuration space for PCIe Gen1 or Gen2 speeds PCI Express PF_PCIE Configures the USB GEN 2 · USB GEN 1 · USB Product Features PCIe · PCIe EZ-Latch：PCIe x16 Slot with Quick Release Design; Fast Networks：GbE LAN