GeForce RTX 3090 Ti Founders Edition is NVIDIA's first graphics card with 16 -pin power connector - VideoCardz.com
Black PCIe 5 0 Extension Cable | Pcie Male Connector – PC Gods
The GALAX RTX 3090 Ti HOF Features Dual 16-pin Connectors (1200W Input Capability) | ThinkComputers.org
90 Degree Power Supply Adapter 16pin(12+4pin) Pci-e 5.0 Male To Female Connector For Rtx 4090 4080 4070 Ti 3090 Graphics Card - Pc Hardware Cables & Adapters - AliExpress
VideoCardz: "GeForce RTX 3090 Ti Founders Edition is NVIDIA's first graphics card with 16-pin power connector" : r/nvidia