NEC MultiSync WD551 Manuel D'installation page 13

4. Cable information
CAUTION: Use the provided specified cables with this product so as not to interfere
with radio and television reception.
For D-Sub 9-Pin, USB, HDMI and USB-C, please use a shielded
signal cable.
Use of other cables and adapters may cause interference with radio and
television reception.
5. Turn on the power for the monitor and the external equipment
Switch on the monitor power first.
Main Power Switch
OFF
ON
Main Power Switch
English-11
Wireless Remote Control
Power
Keys for Adjust
and setting
EN
OSD Menu