If your Apple HomeView displays a “Power Adapter Not Supported” warning, the problem may be its USB-C power supply, cable or connection. Apple says the alert can appear with a lightning-bolt symbol and yellow warning triangle when the device isn’t receiving power that meets its requirements.
Check the correct power requirements
The standard HomeView requires a USB-C adapter rated for at least 30W and supporting 15V at 2A or higher. The wall-mounted model uses different specifications: at least 20W with 9V at 2.22A or higher. Apple lists both requirements and notes that the standard model ships with a power adapter, while the wall-mounted version relies on a separately purchased compatible power solution.
Try these troubleshooting steps
First, check that the adapter is undamaged and firmly connected. Disconnect it from power, unplug the cable, then gently clean the adapter, device port and cable ends with a soft, dry, lint-free cloth. Reconnect everything securely and check whether the warning disappears.
If the message remains, test a different working power socket. Then try another compatible USB-C cable and power adapter that satisfy the correct voltage and wattage requirements. Apple recommends checking the result after each step rather than changing everything at once.
For a professionally installed wall-mounted HomeView, contact your installer if the warning persists. If a third-party mount is involved, Apple’s guidance also suggests testing the display directly with a compatible cable and adapter when safe and practical. Don’t attempt electrical rewiring yourself.
For more HomeView information, see our device overview and our Apple Home accessory setup coverage.
