I use a brand new 5G7AINDRM-USB-A-HUB, powered by USB.
When I connect a pico2 board to channel 7, it fails to enumerate (even in bootloader mode). It enumerates just fine on all other channels. I can see that the board is powered thought.
While testing, the hub is directly plugged into my laptop and the pico2 is the only thing I connect to the hub. I tried several pico2 boards, the result is always the same. All pico2 boards enumerate just fine on all other hubs I tried so far (cheap, dumb hubs).
I also tried to connect a mouse, it does not work on channel 7.
Is my unit defective or there is something special to do to be able to use channel 7 ?
Hi @acapola, this is likely happening as that port, does not support USB 2.0. As per the manual, and tech specs: 5G7AINDRM-USB-A-HUB_QSG.pdf
The reason this port doesn’t support USB 2.0 or lower is because the FT232RL serial controller used for the managed portion of the hub is wired to the 2.0 lines of this port. As such, these lines are not present, and they are what’s used for USB 1.x, and 2.0 communication.
Anything that is USB 2.0 only, or lower (such as a most mice, keyboards, etc.) will not work on this port. Looking at the Raspberry Pi Pico 2, it has a USB 1.1 controller/PHY, so it won’t work on port 7 and you will have to use a different port.
1 Like