Not surprisingly there’s something I’m totally missing here. If I unplug all the USB devices and only have the Pi5 and the 5.5" display this is what I get. Lower than above but the delta doesn’t look significant to me.
I still don’t know what “symptoms” of insufficient power would manifest themselves. So far everything works smoothly and I haven’t seen any glitches.
Think this might do the trick?
You may need a USB-A to USB-C converter cable to connect your RPi to this hub. This might limit throughput of the M.2 drive but will enble you to connect via USB-A or USB-C to your DAC (whichever it needs).
And be sure, if you need to order this cable USBA → USBC, you pick a data cable not a charging cable…
Thanks all. I’m still struggling with the basic power capability vs draw. From what I’ve read the Pi 5 PSU is rated a 5v 5.5A and 27W. I’ve seen a lot written that the 5.5A is “beyond” spec for standard USB-C but was made to address the unique requirements of the Pi 5.
That said, if the PSU itself is only sufficient to cover the Pi 5 itself and the inclusion of multiple USB devices put it “over the edge” power-wise that sounds like a very short sided engineering design unless the majority use case scenario for a Pi5 would be to simply drive any peripherals under their own power. In that case some sort of “power calculator” like we have on the PC building side of the house would not only be nice but sort of mandatory.
