Limiting Synchronisation

Hi, sorry if this is a newbie question but I am one! I have searched the forum and cannot find a discussion so here goes. I have a 500Gb USB drive that I have synced up to my WD TV Live Hub. There is a lot of data on the USB that I do not want on the Hub. Is there any way that you can only Synch selected folders from a given volume?

Thanks In advance

My understanding is that USB drives sync everything.  If you can put the USB drive on a network share somehow,  you can select a specific folder for sync.