* This event is time-critical; exceeding OS-specific delays within this event handler (typically of around
* two seconds) will prevent the device from enumerating correctly.
*
- * \note For the smaller series 2 USB AVRs with limited USB controllers, VBUS is not available to the USB controller.
+ * \note For the microcontrollers with limited USB controller functionality, VBUS sensing is not available.
* this means that the current connection state is derived from the bus suspension and wake up events by default,
* which is not always accurate (host may suspend the bus while still connected). If the actual connection state
* needs to be determined, VBUS should be routed to an external pin, and the auto-detect behaviour turned off by