DSE 2019: NEC Display Shows UN492S 49-Inch Video Wall Display with Spectra View Engine March 29, 2019 | Home / March 29, 2019 rave-video / DSE 2019: NEC Display Shows UN492S 49-Inch Video Wall Display with Spectra View Engine DSE 2019: NEC Display Shows UN492S 49-Inch Video Wall Display with Spectra View Engine