Dell UltraSharp 49 U4924DW 49" WQHD Ultrawide Curved Monitor - Manual (Page 43)

Setting up the monitor
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2. Attach the monitor (still inside the lower cushion) to the Wall Mount/3
rd
Party
Arm following its respective instructions.
NOTE: The monitor is very heavy; handle with extreme care. It is
recommended to have two people to lift or move this monitor.
3. Detach the stickers from the four corners of the lower cushion, and remove
the lower cushion from the monitor.