CommentStreams:Fbb8a3e95700e8bc9d534fdaef736cfd

Is it possible to power the Raspberry Pi 5 via a USB Type-C cable, while powering HDDs directly from an independent 12V power supply? In that case, will the Raspberry Pi 5 still be able to power the X1009 over GPIO — essentially in reverse? The DC 12V 5.5x2.1mm power input would not be used in this setup.

If that is not possible, then I will need to use two 12V power supplies:

- one 12V power supply for the X1009 (and Raspberry Pi 5)
- another 12V power supply for the HDDs.

The reason I'm asking is that the chip gets very hot when the X1009 is connected to the Raspberry Pi 5 and two 2.5" 5400 RPM HDDs, even with a heatsink. I expect that using separate power supplies will distribute the load and reduce the heat on the X1009.