Post your Hardware IDs from Device Manager (right-click unknown device → Properties → Details → Hardware Ids). I’ll help match the exact driver.

Here are some common drivers that you may need to download for your Acer Aspire One D270:

Since the Acer Aspire One D270 is an older netbook (released around 2012), most modern operating systems (Windows 10 and Windows 11) will automatically install the necessary drivers.