Right click the desired IDE controller (Primary/Secondary) and choose Properties.
Choose the "Advanced Settings" tab.
Change "Transfer Mode" as necessary.
Note: This option will only be available on hardware that supports this feature. If you are unsure please contact your hardware manufacturer.
Comments
Comment #1
(Posted by an unknown user) Rating
This is naïve. Windows often forces PIO mode, which cannot be changed in Device Manager and requires editing the registry to fix.