NEC MultiSync LCD1560V+ Manuel D'utilisation page 9

Quick Start
This LCD monitor is designed for use with a flexible arm. Please use the
attached screws (4pcs) as shown in the picture when installing.
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).
Specifications
–continued
If using other screws, check depth of hole.
Weight of LCD assembly: 2.8kg(MAX)
6
Thickness of Bracket(Arm)
2.0~3.2mm
Tighten all screws.