A new Seagate 2TB Expansion Drive which I assumed would work just fine on Mac OS X since it connects with standard USB 2 or USB 3 came in a box with bountiful mentions of backing up your “PC” and notes compatibility with several versions of Microsoft Windows.
How does it work on Mac OS X 10.9.5? I plugged it in and was immediately asked if I wanted to use the drive for Time Machine backups, which I did.
Sharing here in case anyone wonders about OS X compatibility. Some Amazon reviews for the 3TB version complain that the drive doesn’t last very long; so far my 2TB unit has lasted fifteen minutes, but I will try to remember to update this post after more extended use.
[July 2017 Update, two and a half years later: the drive is still working flawlessly.]