Based on this product's specifications, here are some alternatives and similar models
DELTACO 4-pin to 2x4-pin internal power cable (model PART-114) for motherboard/CPU power
Summary description:
Internal DELTACO power cable (model PART-114) converts a single 4-pin connector into two 4-pin connectors for motherboard or CPU auxiliary power. Designed for internal PC use, it enables powering additional components or split power rails where a second 4-pin feed is needed. Compact and easy to route inside cases for upgrades and repairs.