The cable in question is designed to be compatible with graphics cards equipped with a 12VHPWR port, but it is not specifically mentioned as being compatible with the MSI GeForce RTX 5090 32G GAMING TRIO OC. To confirm compatibility, it's best to check the technical specifications of the graphics card and the cable. The cable is mainly intended for ASUS, Seasonic and Phanteks power supplies.

CableMod's PRO ModFlex RT 12VHPWR PCIe cable is compatible with Corsair power supplies, including the HX1500i model. This cable is designed specifically as a replacement cable for Corsair power supplies, allowing GPUs with a 12VHPWR port to be powered from traditional 8-pin PCIe connectors. It measures 60 cm and is equipped with 16-pin to dual 8-pin PCIe connectors, matching the needs of high-end Corsair power supplies such as the HX1500i.

The cable is specially designed for ASUS, Seasonic and Phanteks power supplies. Although the connector is 12VHPWR on both sides, the compatibility with the BeQuiet Pure Power 12M is not explicitly confirmed. It would be advisable to check compatibility directly with CableMod or check the specifications of the BeQuiet Pure Power 12M to ensure that the cable will fit.