3 ms·

Honest question: Do you need a vendor ID if your device only supplies/draws power and doesn't use the data lines? Is a vendor ID necessary for things like USB-P

Honest question: Do you need a vendor ID if your device only supplies/draws power and doesn't use the data lines? Is a vendor ID necessary for things like USB-PD?

elisaado 7y ago
Yes.
- limomium 7y ago
  How do old devices without Internet connection recognize new IDs registered after their manufacture? Clearly, there's no ID, but rather some kind of protocol for negotiating voltage levels.