12VHPWR 90 Degree Adapter to 2X 8Pin: 16AWG 16 PIN GPU Right Angle PCI-E 5.0 Extension for for Graphic Card GPU 12+4pin RTX 3090Ti 4070Ti 4080 4090 (Type A)

https://a.co/d/05HK3pGm hopefully the link to Amazon works! I’m sure you could get any 2x8 pin adapter but the 90 degree angle works great in the r16 case! Hopefully it solves your issue, I’ve had no problems since I got that cable