can you use office mac 2011 once it has been used before

[jen365]

can you use office mac 2011 once it has been used before, have product key but I wonder if it can be used on another computer?

[yarmak]

Depends if the office mac software is one user or more - (usually up to 5) The product can be used only one for single registration or up to 5 for five registrations

Dave