Not sure why you want to trust it but page 90 of the user manual has something like this:
"This.section.allows.the.user.to.configure.the.device.so.that.it.becomes.a.backup.destination.in.the.Mac.OS.X.Time.Machine..In.order.to.use.this. function,.the.AFP.service.is.required..The.AFP.service.will.start.automatically.as.soon.as.this.function.is.enabled..
Enable Time Machine:
Click.this.to.enable.the.Time.Machine.function. to.work.with.a.MAC.OS.X.Time.Machine..The. Time. Machine. Settings. list. will. appear. when. this.checkbox.is.ticked.
A. list. of. destination. folders. on. the. Network. Shares.associated.with.the.Time.Machine. backup.
Click.to.add.a.NAS.folder.as.a.Time.Machine. destination.
Click.to.delete.a.NAS.folder.setup. Deletes.all.of.the.NAS.folders.in.the.list."