Fault · Charging and USB
Doesn't recognize accessories or adapters
“Accessory not supported”, or a camera adapter or keyboard on the charging port that doesn't work, even though the device charges.
View the guide steps online with your BoarDray account.
Covered on 42 models
- iPad38With guide
- iPhone4With guide
How to approach it
The charging port identifies each accessory by its ID lines (ACC_ID) and its detection line, and can power it from its own 3.3 V output that the PMU enables. The USB control chip ({role:usb}) decides whether the accessory is valid. The most common cause is a dirty or damaged port, especially after a connector repair; before measuring, try another cable and another accessory.
Other faults in Charging and USB
- Not chargingView fault
- Slow charging or disconnectsView fault
- Not recognized by the computerView fault
- Not charging wirelesslyView fault
Where to find it
- By modelEach model lists the guides that apply to it.
- By familyiPad and iPhone already have the guide.
Models where it is covered
iPad · 38 models
iPhone · 4 models
See inside every board
Sign in to open the Doesn't recognize accessories or adapters guide next to the schematic and board view.