The following article gives troubleshooting steps when the Unknown or Incorrect AC Adapter Detected error message is seen on a Dell Portable system when it is been docked.
You may receive an error during system startup stating "Unknown or Incorrect AC Adapter Detected."
Depending on the system, portable systems use either a 65W (Watt), 90W, 120W, 130W, 240W, or a 330W AC Adapter. Please make sure you are using the correct adapter for your system.
Please refer to the AC Adapters for use with your Dell system section of your manual to check on the proper adapter model approved for your system.
You can try to determine what is causing this error message, using the troubleshooting steps below.
Back to Top
If the system is connected to a Docking Station, remove it from the Dock and test again with the correct AC Adapter for the system or try with a known good working AC Adapter.
If the message does not appear again, troubleshoot the adapter which is connected to the Docking Station, see the Docking Station section below.
(Figure 1.0 AC Adapter Green LED)
The D Series Docking station has an internal power supply and uses a Power cord only.
The D Series Port replicator uses a 90W AC Adapter.
The E Series Docking stations and port replicators use 130 W or 210 W AC adapter.
Article ID: SLN151913Last Date Modified: 09/11/2020 08:18 AM