Go back to the Dropbox website, or just search for "Dropbox download" in your browser. Find the download link, usually ...

DropBox installer app only gives option to sync with my C drive... not enough space. I need it to install/sync on D instead. WTF? How the heck does it NOT give you this option?

There’s a new connector in beta for Microsoft’s Active Directory database for identity management, and admins can now remotely install Dropbox for Business on many Windows computers at once.