Thermaltake announced the "TT Premium PCI-E 4.0 Extender" series of PCI-Express 4.0 riser cables equipped with an electromagnetic interference shield mechanism using conductive polymer.

The riser cables are compatible with PCI-Express 4.0 that can bring out the performance of the latest graphics cards. There are two types of cable lengths, 600 mm and 300 mm, and a 90 ° angle change model is available for the 300 mm model. The cable is a flat cable that is easy to handle even in a small case, and is equipped with an electromagnetic interference shield made of conductive polymer. It is also equipped with a cable protector that prevents damage to the cable and avoids signal loss.

TT Premium PCI-E 4.0 Extender 600mm (Model: AC-059-CO1OTN-C1)
https://www.thermaltake.com/tt-premium-pci-e-4-0-extender-600mm.html
TT Premium PCI- E 4.0 Extender 300mm (Model: AC-058-CO1OTN-C1)
https://www.thermaltake.com/tt-premium-pci-e-4-0-extender-300mm.html
TT Premium PCI-E 4.0 Extender 300mm with 90 degree adapter (model number: AC-058-CO1OTN-C2)
https://www.thermaltake.com/tt-premium-pci-e-4-0-extender-300mm-with-90-degree-adapter.html