Based on this product's specifications, here are some alternatives and similar models
Internal power cable NZXT BB-CG1BB 0.65 m
Summary description:
The NZXT BB-CG1BB internal power cable is 0.65 m long and features a 12VHPWR connector and 2 x PCI-E (8-pin) connectors. It ensures reliable power delivery for your components and is backed by a 2-year warranty, making it a durable choice for your PC build.