Reference:
DS-DM1940W
Wall mount bracket for monitors DS-D5019QE, DS-D5019QE-B, DS-D5022QE-E, DS-D5022QE-B, DS-D5022FC, DS-D5024FC, DS-D5032FC-A, DS-D5032FL, DS-D5032FL-B , DS-D5032FL-C, DS-D5040FC, DS-D5028UC.