Find and remove duplicates in a NAS from a locally network connected PC

Please advise soft to find and delete duplicate files in an NAS EX2 from a PC in the same local network as the EX2.

Its hard to do de-duplicate. But you can use native windows software. Mount the volume as mapped drive and use the app to do the de-duplication based on Hash check or name match.

Which App?

just google some de-duplicator you will find many try and buy and freeware