NEC LCD1550V - Manual (Page 11)

English-10
7. This LCD monitor is designed for use with a flexible arm. Please use
the attached screws (4pcs) when mounting. To meet the safety
requirements the monitor must be mounted to an arm which
guaranties the necessary stability under consideration of the weight
of the monitor. The LCD monitor shall only be used with an approved
arm (e.g. GS mark).
Figure R.2
Figure R.3
Non-abrasive
surface