PCIe 4.0 Compatible: While providing twice the bandwidth of PCIe 3.0, the Gen 4.0 riser cable remains backwards compatible with a maximum transfer rate of over 64Gb/s (bi-directional) and fully supports the 16GT/s bit rate of PCIe 4.0 devices.
20cm M.2 NGFF A E Key to PCIe x1 x16 Adapter Extension Cable with Power
Black 20cm PCIE 3.0 X16 Extender Riser Cable High Shielding Property 180 De OU
PCI-E 4.0 X16 1 to 2 Expansion Card Split Card PCIe-Bifurcation X16 to2684
PCI-E 4.0 X16 1 to 2 Expansion Card Gen4 Split Card PCIe-Bifurcation X16 to4214
PCIe Gen4 x16 GPU Riser Cable 40cm Flexible Extension PCI Express 4.0
[20cm PCIE 3.0 16x Extreme High Speed Riser Cable PCI Express Port GPU Extension
