Apple System Profiler

Access this utility in any MacOS since 8.0+(?) under the Apple Menu:


In general, choose a tab, then expand the triangles to reveal more details.


System Profile


Here's what info is available when fully expanded. Note the MAC Address, under Network / AppleTalk / Hardware Address:



Devices & Volumes





Control Panels

Use this panel (and the one for Extensions) as a convenience over looking in the System Folder for what is currently running on their Macintosh.



Extensions

Use this panel (and the one for Control Panels) as a convenience over looking in the System Folder for what is currently running on their Macintosh.



email Dave with corrections and suggestions.
Everything here is copyright Dave Kitabjian.