MAC OS: latest NBU client version I can go to?

I am running NBU 7.7.3. 

I have a Mac client that looks like this:

# uname -a
Darwin HOSTNAME.local 13.4.0 Darwin Kernel Version 13.4.0: Wed Mar 18 16:20:14 PDT 2015; root:xnu-2422.115.14~1/RELEASE_X86_64 x86_64

It's the only Mac client I have, and I rarely touch it... but it's at 7.6.0.4 right now, and I'm wondering if I can upgrade it.

Trying to find out what the latest client version of NetBackup I can safely go to on this server is... and possibly a download link?

(Apologies if I'm being a bit lazy, it's Friday...)

Thanks in advance!