1U PC i7 8th Gen E 1 PCIe Dual Width Slot

The PCIe spec does not require that slots support anything except 1x When a card is inserted the host queries it for lane support, and whatever

However, there is usually a cost increase incurred with higher lane counts PCIe Slot Differences Photo from 20050531pci-express-cards

pcie 1 slot GTs = PCI-e gen 1, 5 GTs = PCI-e gen 2, 8 GTs = PCI-e gen 3, and the width is the number of lanes Share

pcie nvme slot A PCIe x4 slot has a physical length of approximately 39mm and has a single notch on the connector, similar to a PCIe x1 slot PCIe x4 devices are compatible