Accessory not supported…on my iPad
I keep getting this pop up frequently. I have not connected any accessories to my iPad. So why this message. It started after the last update.
iPad Pro, iPadOS 16
See >>> If you see an ‘Accessory may not be supported’ alert - Apple Support
If you are using a Smart (folio) keyboard, the alert is typical of a faulty folio keyboard. The electrical connections that pass through the flexible fabric hinges typically fracture - this usually resulting in errors and/or the on-screen notification that you see.