E-key - with two PCIe Gen2 x1 lanes or one?

PCIe x16 slot along with a PCIe slot In fact PCIe x1 slot, and more USB options Features like the IO shield

PCIe x1 slots have only one PCIe lane Despite having only one PCIe lane, PCIe x1 slots are useful for various lower-power PCIe peripheral cards

pcie slot function What are PCIe x1 Slots Used For?

pcie 40 in 30 slot The NVMe PCIe card allows you add PCI-e NVMe SSD to your motherboard without slot, perfect solution for PC upgraded Up to 3200+ MB