Backup to PR 4100

My Cloud OS 3 Personal & Network Attached Storage My Cloud Pro Series
1

I have a WD PR4100 does anyone in the world know how to set up or find software that will allow me to back up files from my hard drive onto my WD PR4100 NAS. Impossible to find help anywhere.

Thanks.

2

I use freefilesync for just that purpose.

3

Really appreciate the help