Yes, there's no such thing as IPO 500 Manager, its IP Office Manager and works for all the different types of physical IP Office system.
BUT BE CAREFUL - Whilst IP Office Manager is supposed to be backwards compatible, I wouldn't trust that beyond a couple of releases from whichever version of Manager you are using. If possible, make sure you use the version of Manager that matches the software running on the IP Office. [And be aware that for really old releases, there's a difference in their release numbers, for example IP Office R2.x systems use IP Office Manager v4.x.
Stuck in a never ending cycle of file copying.