Fasgear PCI-e Gen 5.0 Power Cable - 70cm 12VHPWR 16-pin (12+4 pin) Male to PCIE 3x8pin(6+2 pin) Male Sleeved Cable - 600W GPU Power Cord for RTX 3090 Ti & RTX 4080
Thermaltake launches 1650W power supplies with dual native PCIe Gen5 16-pin connectors, custom RTX 4090 ready? - VideoCardz.com
16-Pin Card Edge Connector - Canada
Best Buy: CORSAIR 600W PCIe 5.0 / Gen 5 12VHPWR Type-4 PSU Power Cable Black CP-8920284
Gigabyte States A Single 16-Pin or Triple 8-Pin To 16-Pin Gen 5 Connector Required For Next-Gen GPUs