if on Mac, how to see the Device Manager?

Solution 1:

The Mac doesn't have a device manager, because mainly devices manage themselves; they almost never need fiddling with or new drivers adding.

The closest equivalent is the System Report, accessed from
 menu > About this Mac > System Report...

enter image description here

If any device has adjustable parameters, they will be in a Prefs Pane instead, in System Preferences.