My friend has built a device with these wires, and the PCIe risers she had, were found to have PEWAKE and PERST, and the design has worked wonders. However, later on, a riser compatibility ...

With PCIe over optics, system designers will be able ... 6 retimer integrated into a TeraHop-developed PCIe Gen 6 retimed riser card. By retiming and converting PCIe Gen 6 electrical signals ...