N3551K - Monitor OPTOMA - Free user manual and instructions

Product Type	Interactive Monitor
Brand	Optoma
Model	N3551K
Screen Size	55 inches (139.7 cm)
Native Resolution	3840 x 2160 (4K UHD)
Operating System	Android 11 (custom)
HDMI Connectivity	2 HDMI inputs (including one CEC compatible), 1 HDMI 2.0 output
USB Connectivity	1 USB 2.0 port, 1 USB 3.0 port, 1 USB Type-C port (DisplayPort 1.2, Power Delivery 65W)
Network Connectivity	1 LAN port (RJ45), slot for Wi-Fi dongle (optional), Bluetooth 5.2
Serial Connectivity	RS232 port (DB9)
Audio Output	3.5 mm audio jack, optical SPDIF port
Built-in Speakers	2 speakers
VESA Wall Mount	400 x 200 mm, M6 x 12L screws
Power Supply	100-240 V AC, 50/60 Hz
Energy Consumption	ENERGY STAR certified (Standard mode)
Wireless Features	Creative Cast (mirroring, sharing), AirPlay, Chromecast
Eye Protection Features	Adjustable blue light filter, flicker-free technology
Control Features	RS232, LAN (port 23), OMS (Optoma Management Suite), infrared remote control
Display Features	PIP (picture-in-picture), tiling (up to 5x5), anti-retention pixel shift
Maintenance	Clean the screen with a soft dry cloth; disconnect power before cleaning
Security	Password screen lock, OSD lock, controlled installation of third-party apps
General Information	User manual available in French (120 pages); warranty according to region

Frequently Asked Questions - N3551K OPTOMA

How to connect my computer to the Optoma N3551K monitor?

You can connect your computer via an HDMI cable to one of the HDMI ports (HDMI 1 or HDMI 2 for the 55" model). The USB Type-C port also supports display (DisplayPort 1.2) and provides 65W power to charge your computer.

How to use the Creative Cast wireless screen sharing feature?

Make sure the monitor and your mobile device/computer are connected to the same Wi-Fi network. On the monitor, open the Creative Cast app. On your device, scan the displayed QR code or enter the IP address shown. Follow the on-screen instructions to start broadcasting (mirroring, photos, documents, etc.).

The monitor turns off automatically after a few minutes, what should I do?

Check the auto-off settings in the OSD menu (Shortcut > Settings > Power > Auto Off). If the function is enabled, disable it or increase the delay. Also ensure that the power cable is properly connected and the power switch is set to ON.

How to mount the monitor on the wall?

Use a VESA wall mount kit approved by Optoma (ref. WIB6560A for 55"). The VESA dimensions are 400x200 mm with M6x12L screws. The wall mount must be fixed on a concrete wall. Follow the steps in the installation manual (pages 15-17). If you do not have a concrete wall, use the optional stand base (ST01).

How to adjust color temperature and brightness?

Press the Menu button on the remote control or control panel. In the OSD menu, select Image > Display Mode (choose Presentation, Bright, Cinema, HDR, or Custom). In Custom mode, you can adjust brightness, contrast, color, and color temperature (Standard, Warm, or Cool). Press Enter to confirm.

How to activate the screen lock function?

Go to Android Settings > Security > Screen lock password. Set a 4-digit code. Once activated, the screen will lock after standby or on demand. To disable, go to the same menu and select 'Clear screen lock password'.

What to do if the remote control does not work?

Check that the batteries are correctly inserted (2 AAA batteries) and not depleted. Make sure there is no obstruction between the remote and the monitor's IR sensor (maximum range 8 meters, angle ±30°). Avoid direct sunlight or fluorescent lamps near the sensor.

How to update the monitor software?

Via Internet (OTA): go to Settings > System > Update > OTA Software Update. Enable 'Check for update on power on' and 'Auto download'. If an update is available, follow the instructions. Via USB: download the update file to a USB key formatted in FAT32, plug it into the monitor, then go to Settings > System > Update > USB Software Upgrade.

What image modes are available and which one to choose for a presentation?

The available image modes are: Presentation, Bright, Cinema, HDR, and Custom. For a meeting room presentation, Presentation mode is recommended as it offers a good balance between brightness and readability. You can also manually adjust settings in Custom mode.

How to configure the tiling (video wall) function?

Go to OSD menu > Settings > Device > Tiling. Enable Tiling, then configure the number of monitors (H x V) and the position of your screen in the video wall. Frame compensation (Frame Comp) can be enabled to correct gaps between screens. Note: the tiling function does not work with Android and HDMI 3 sources.

USER MANUAL N3551K OPTOMA

Creative Board....72

Optoma Marketplace 88

Keeper 89

MediaPlayer....90

Optoma Management Suite (OMS)....99

INFORMATIONS SUPPLÉMENTAIRES .... 102

Dimensions....102

55 pouces....102

65 pouces....103

75 pouces....104

86 pouces....105

98 pouces....106

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INTRODUCTION

INTRODUCTION

No. Bouton Description

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75 pouces 86 pouces

98 pouces

CONFIGURATION ET INSTALLATION

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Remarque :

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Remarque :

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CONFIGURATION ET INSTALLATION

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MISE EN GARDE

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CONFIGURATION ET INSTALLATION

Connexions

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CONFIGURATION ET INSTALLATION

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Paysage Portrait

Advanced settings
USB WIFI Enable	<=	OPEN	=>
USB Disk Enable	<=	OFF	=>
Android input Enable	<=	OPEN	=>
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