Yes, no and no.Plug in some USB disks and the Pi 5 needs more than 5v * 3 amp. That means PD. PD is tricky.
- If you are using HDDs or SSDs via USB or via PCIe, a PSU with 5A or greater capacity is strongly recommended.
- It doesn't need to be PD. PD is one way for the Pi and PSU to negotiate 5A. A USB compliant PSU without PD should not supply more than 3A, but a non-USB supply (even if DIY connected to a USB plug) has no such limit. We can configure the Pi to assume that the supply is 5A capable, regardless of whether this is actually the case. Then we have assumed responsibility for keeping the total load below the PSU capacity.
- PD is not tricky. As long as the PSU has a 5V 5A mode, PD should just work and no additional configuration is necessary.
Statistics: Posted by davidcoton — Mon Jul 22, 2024 10:41 am