The Dell DA90PM111 is a 90-watt AC power adapter used for various Dell laptops. This adapter provides power to your laptop and charges its battery. If you have a Dell laptop that requires a 90W AC adapter, the DA90PM111 could be suitable for your device.

When searching for information or assistance regarding the Dell DA90PM111 AC adapter, it's helpful to provide more specific details or questions you may have. For example:

1. Compatibility: Ensure that the DA90PM111 is compatible with your Dell laptop model. You can usually find this information in your laptop's user manual or on the Dell website.

2. Replacement: If you need a replacement adapter, make sure to get an official Dell adapter or a compatible third-party adapter with the correct specifications.

3. Specifications: Check the power specifications (voltage and current) of the adapter to ensure it meets the requirements of your laptop.

4. Issues: If you are experiencing problems with your DA90PM111 adapter, you might want to describe the issue in more detail for troubleshooting.