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USB Devices Disabled

If a Mac accessory needs more power or is using more power than your Mac is providing, you may see the message "USB Devices Disabled"...

USB Devices Disabled

 

This could mean that a device connected to the USB-A , USB-C , or Thunderbolt (USB-C) port on your Mac isn't getting enough power:

  • A message says that the device needs more power, the operation can't be completed, or USB devices are disabled until you unplug the device using too much power.
  • The device doesn't turn on or isn't recognized by your Mac.
    https://support.apple.com/en-us/HT204377

 

Solutions

  1. Connect your AC mains adaptor to the mac
  2. Remove all other USB devices, including hubs and docking stations. 

 

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