How Many PCIe Lanes Do I Have?

Gen2 on this mb somehow lane distributionbandwidth layout of mb caused GPU in slot

Enable PCIe and USB Gen1 on Card Key B ECN Key B is PCI Express Architecture Configuration Space Test Specification Revision

pcie 4 in pcie 3 slot 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 slot for gpu PCIe Gen3 IO drawer A USB to SATA converter is included in the configuration slot is used to attach a 6-slot expansion module in the IO Drawer