Based on this product's specifications, here are some alternatives and similar models
InLine Power Adaptor Cable, 2x SATA 15-Pin Male to 8-Pin PCI-Express Male, 0.15m
Summary description:
InLine power adaptor cable designed to connect computer power supplies using two SATA 15-pin connectors to an 8-pin PCI-Express graphics card interface. With a length of 0.15 meters, this cable provides a reliable power connection for internal PC components. RoHS compliant and features a durable multicolour design suitable for system builders and hardware upgrades.