Issue with USB Ports on NanoPi Neo 2 Plus

[HowardLivingston]

Hi!

I've been experimenting with my NanoPi Neo 2 Plus and managed to get initramfs working, thanks to the Armbian kernel config.
However, I’ve encountered an issue: only the first of the two USB ports is functional, while the second one appears completely dead.
Big Disclaimer: I'm using an HTC PSU that provides only 1A, not the recommended 2A. I'm unsure if this could be causing the issue.
Aside from this, everything else seems to be working fine. Wi-Fi is functional, and I've disabled Bluetooth.
Here’s the output of lsusb when no devices are plugged into the USB ports:

Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Any suggestions or ideas on how to troubleshoot this?

[strippedoracle]

Your NanoPi Neo 2 Plus is designed to run on 5V / 2A or more, and you’re feeding it only 1A.
That’s just enough for the board, Wi-Fi, and basic operation — but not enough to power both USB ports reliably. When there isn’t enough current:

The board prioritizes essential functions (CPU, RAM, Wi-Fi, first USB host).

The “extra” USB port either won’t initialize at all, or will drop devices when they draw power.

This matches your symptoms: Wi-Fi works, Bluetooth off, one USB alive, the other “dead.”

So before chasing kernel or device tree issues, swap to a proper 5V/2A (or 2.5A) PSU. If the second port starts working, problem solved.