Attaching Mounting Accessories
The monitor is designed for use with the VESA mounting
1. Attach Mounting Accessories
Be careful to avoid tipping monitor when attaching
For NEC mounting accessory only*
VESA Mounting Interface (M6)
300 mm (X464UN/
400 mm (X554UN/
Mounting accessories can be attached with the monitor in
the face down position. To avoid damaging the screen face,
place the protective sheet on the table underneath the LCD.
The protective sheet was wrapped around the LCD in the
original packaging. Make sure there is nothing on the table
that can damage the monitor.
When using mounting accessories other than NEC compliant
and approved, they must comply with the VESA-compatible
*1: X464UN/X464UNV: WM-46UN-L2 or WM-46UN-P.
X464UNS: WM-46UN-L3 or WM-46UN-P2.
X554UN/X554UNS/X554UNV: WM-55UN-L or WM-55UN-P.
2. Using Option Board
1. Turn off the main power switch.
2. Remove the handle.*
3. Remove the attached slot cover by unscrewing the
installed screws (Figure 1).
4. Insert option board in to the monitor. Attach the slot cover
by using the removed screws.
5. Attach the handle.*
Please contact your supplier for available option
Do not apply excessive force to manipulate the
optional board before ﬁ xing it with screws.
*2: Only for X464UN/X464UNS/X464UNV.
(Only for X464UN/X464UNS/X464UNV)
3. Installing and removing optional table
CAUTION: Installing and removing the stand must be done
by two or more people.
To install, follow those instructions included with the stand or
mounting apparatus. Use only those devices recommended
by the manufacturer.
For X464UN/X464UNS/X464UNV, use ONLY
thumbscrews which are included with the optional
table top stand.
For X554UN/X554UNS/X554UNV, use ONLY
thumbscrews which are included in the monitor.
When installing the LCD monitor stand, handle the unit with
care to avoid pinching your ﬁ ngers.
Install the stand so the long end of the feet
face forward. Use the ST-322 for the X464UN/
X464UNS/X464UNV and the ST-5220 for the
4. Ventilation Requirements
When mounting in an enclosed space or recessed area,
leave adequate room between the monitor and the enclosure
to allow heat to disperse, as shown below.
Allow adequate ventilation or provide air conditioning around
the monitor, so that heat can properly dissipate away from
the unit and mounting apparatus; especially when you use
monitors in multiple screen.
Optional table top stand