On page 4, there is an "IDE Power" connector. It looks a lot like a 4 pin CPU fan connector, but it (obviously) provides different voltages that are appropriate for 3.5" IDE drives (5V, 12V) and ...

This allows for a modest bump in total power available for GPUs compared to PCIe Gen 4, which offers 150W per 8-pin connector, and 75W from the slot itself.

With one simple change to its 12VHPWR connector, MSI has made it very obvious when the connector isn't plugged in all the way into a graphics card or PSU. The bit that's meant to be on the inside ...