Salut together, I own several Synology NAS - one of them is the DS413 - I now have to install an extension - according to the compatibility list, the DX513 should fit - is the DX517 (this one) also suitable (is probably the successor model)? In my opinion - due to the eSATA connection - this one should actually also fit, especially as the DSM versions are up to date. Thanks for a short info bg Rainer