HATs and other add-ons • How much current should the official power supply deliver to Pi 5?

Hi there.

I think I have a hardware problem with my Pi 5. I have a Pineberry Pi Bottom with a 4 TB SSD attached to the Pi 5 (8 GB ram). I want to use it as a NAS (and media center). Only issue is that file transfer via my home ethernet is slow... like 2-10 MB/s... mostly 2-4. And I tested for issues with ethernet. It works fine. Iperf test shows close to 1GBit/S speed between Pi5 and a Windows 11 laptop.
I tried attaching SSD in enclosure via USB-C. That works close to Gbit speed.
I tried SSD via USB and empty Pineberry hat attached. Slow.
Adding to this I had some warnings ever since I got the Pi 5 (got Hat later) that lack of power could disable some peripherals. (Forgot exact wording).
Now I bought a voltage/current tester, and it shows pretty stable 5 Volt, but less than 1 A. Even when running file transfer on SSD in Pineberry Hat.

So... big question: is my power supply (official Raspberry 27W) faulty? Or would it be the Pi 5?

Can you suggest other tests to narrow down on the problem?

Best regards

Ulrich

Statistics: Posted by ullenulle — Sun Feb 11, 2024 12:02 am

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