USB-C not working on Windows 11? What each message means
2 min read · 8 steps · Updated 2 October 2026
Plug the device straight into the PC, not into a hub, and use the cable that came with it. If Windows shows Slow charger or PC isn't charging, use the original charger and clean the port. For USB device not recognized, look up the error code in Device Manager.
USB-C plugs all look the same, but ports and cables differ in what they can do: charging power, data speed, video, Thunderbolt. When something does not match, Windows 11 shows a notification. This is what each one means, in Microsoft's own wording.
These messages are from Windows 11.
Step by step
Slow charger, or PC isn't charging
The charger or cable is not powerful enough, it is plugged into a port that is not meant for charging, it runs through a hub, or dust in the port stops the plug from going in fully. Use the charger and cable that came with the PC, plug into the charging port directly, and clean the port carefully.
USB device not recognized
The device has a fault or its driver is missing. Right-click the Start button, open Device Manager, find the device with the warning sign and open its Properties to read the error code. Then follow the troubleshooting for that code.
USB device might need more power
The PC cannot supply enough power, often because it runs on battery or powers other devices too. Plug the PC in, unplug devices you do not need, or give the device its own power supply.
USB or Thunderbolt device functionality might be limited
The device has features that this port, cable or PC does not support, or it is connected through a hub. Plug it directly into a port that supports the feature (look for the Thunderbolt symbol) and use a suitable cable.
USB4 device functionality might be limited
A USB4 device is connected to a port that is not USB4, through a dock, or with a cable that is not certified for USB4. Connect it directly to a USB4 port with a certified cable.
Display connection might be limited
The PC, the cable or the monitor does not support DisplayPort over USB-C, or the wrong port is used. Connect the monitor directly to a USB-C port with the DisplayPort or Thunderbolt symbol.
Use different USB port
This port does not support what the device needs. Move it to another USB-C port on the PC, without a hub.
Unsupported USB-C audio adapter
Analog audio adapters are not supported on this port. Use a digital USB-C audio adapter.
Good to know
To switch these notifications on or off, open Settings, Bluetooth & devices, USB.
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After a driver problem, check for updates: how to check for updates on Windows 11.
In short: Direct connection, original charger and cable, clean port, the right port for the feature, Device Manager for unrecognised devices.
- Microsoft Support: Fix USB-C problems in Windows
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