I've just finished the SAMBA settings on T3200M.
My android tablet, Windows 10, and my Android phone can be connected to external storage on T3200M. However, my MacAir can't use the shared drive on T3200M.
The drive is on FAT32.
The error message from MacAir is "smbutil: server rejected the authentication: Authentication error" from smbutil command.
Even thought a few messages say the SAMBA versions problems, I've checked the SAMBA version of T3200M is 3.
I don't know why those devices are not working.
Here are a couple of threads that may help:
There is also a document here that talks about this:
I haven't tried these. Good luck!