Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
Where should USB specific questions go ?
Is there a group for this ?
I'm thinking of the firmware to make USB happen
Depends on what you intend to do with it, but probably StackOverflow (if its about coding for a USB driver) or SuperUser (if its about trying to connect a specific USB device to a machine).