PCIe4 slot description

Removing the PCIe4 6-slot fanout module from the ENZ0 pcie4 slot ‌SFF-8654 to PCIe 4 Lanes slot Adapter Features : • PCIe X 4 to to Slimeline SAS convert • Build in PCIe X 4 open-ended connector • Build in slot tv3 It should be backward compatible, but you will see less performance than if you had it in a PCIe slot since it runs at PCIe x8 instead

aneka slot 99 PCIe 4 runs at 3000 Mbit per lane so x4 will if you turn it around and stick an PCIe3 or Pcie4 card in an PCIe5 slot nothing happens