But those features weren't in your original specification ( 'I need a NAS enclosure' ) so why pay for them? The manufacturers know that plain mechanical enclos

But those features weren't in your original specification ( 'I need a NAS enclosure' ) so why pay for them? The manufacturers know that plain mechanical enclosures have very low margins so they implement features that are perceived-needs ( 'oh that sounds cool!' ) and crank the margins by hundreds of per cent.