NEC M551 PCAP (Discontinued) · Replacements in Qatar

Name: NEC MultiSync M551 PCAP 55-inch Touch Display
Brand: NEC
SKU: nec-m551-pcap
Availability: Discontinued

Overview

The NEC M551 PCAP is a 55-inch 4K touch display with projected capacitive touch, supporting up to 20 touch points for finger and pen. NEC has discontinued this model, so owners and buyers comparing options should request a quote for a current equivalent or compatible replacement. Its 500 cd/m² IPS panel and flush glass suit meeting rooms and reception areas in Doha.

What the NEC M551 PCAP is built to do

The NEC M551 PCAP is a 55-inch LCD touch display with a native resolution of 3840 x 2160 and projected capacitive (PCAP) touch sensing. The touch layer tracks up to 20 simultaneous touches and responds to both a finger and a conductive passive stylus, so several people can annotate the same screen in one session. NEC has discontinued this model, so this page also serves owners and buyers looking for a replacement.

Display and touch facts that matter

The IPS panel is rated at 500 cd/m² brightness without the protective glass, with a contrast ratio above 8,000:1 and viewing angles of 178 degrees horizontally and vertically. The 3.5 mm protective glass transmits 85% of light (plus or minus 5%) and has a listed hardness of 6, while touch accuracy is given as plus or minus 1.5 mm. The edge-to-edge flush design has no bezel, so the screen sits neatly on a wall or in a reception counter. Windows Ink and palm rejection are not listed, so pen-based workflows need checking first.

Where it fits in Qatar

A 55-inch format suits rooms where a small group works at close range rather than in a large hall. Three situations stand out:

A boardroom in West Bay where a team reviews drawings or shared documents and several people mark them up together.
A reception or waiting area in Lusail showing wayfinding and visitor information, with touch used for simple menus.
A classroom or training room in Education City where students write with a finger or pen during interactive lessons.

Environment, power and mounting

The operating temperature range is 0 to +35 °C with 20 to 80% humidity. Qatar summer temperatures regularly pass 45 °C, so this display belongs in an air-conditioned room, away from direct sun through glazing. The ingress rating is IP5x at the front and IP2x at the back, so it is not suited to dusty or outdoor positions. The internal power supply accepts 100-240 V AC at 50/60 Hz, and power savings mode draws under 0.5 W. At 36.4 kg and 1,275.8 x 746.8 x 67.8 mm, the panel needs a checked wall. The VESA pattern is 300 x 300 mm with M6 holes. The PDW S 32-65 L and PDW S 32-65 P wall mounts and the PD04 Tipster Trolley are listed options. We offer free site surveys before wall-mounting a panel this size.

Connectivity and remote management

Video inputs include one DisplayPort and two HDMI ports, both with HDCP. Control options include a 100 Mbit LAN port, RS232 and a 3.5 mm remote control jack. NEC NaViSet Administrator 2 is a free download for remote management with automated email alerts, and listed external control options include PJLink, SNMP and Crestron Connected. The M551 PCAP is tested compatible with Barco ClickShare (Conference).

Next steps for your team

Request a quote for a current equivalent or compatible replacement, and include the room size, quantity and wall or trolley arrangement. SmartRooms Qatar supplies and delivers to all eight municipalities, arranges professional installation and issues quotations usually within one working day. Purchase orders, government tenders and bank transfer, cheque or PO payment are all accepted. The manufacturer lists a three-year warranty including the backlight.

Highlights

55-inch IPS LCD touch display at 3840 x 2160 resolution
PCAP touch with up to 20 simultaneous touch points
500 cd/m² brightness without protective glass
Edge-to-edge flush design with no bezel
24/7 operating hours; 0 to +35 °C operating range
Three-year manufacturer warranty including backlight

Classroom fit

At 55″ the farthest student should sit within about 4.1 m (6× the screen height).

Estimated timeline

Quotation within 1 working day · delivery timing depends on stock availability, and we confirm it with your quotation.

Specifications

73 specifications · Source: manufacturer · checked Oct 2026

Product Information3

Product Name: NEC MultiSync® M551 PCAP
Product Group: LCD 55" PCAP Touch Display
Order Code: 60005082

Display10

Panel Technology: IPS with Edge LED backlights
Screen Size [inch/cm]: 55 / 138.8
Aspect Ratio: 16:9
Brightness (without glass) [cd/m²]: 500
Contrast Ratio (default): > 8000:1
Viewing Angle [°]: 178 horizontal / 178 vertical (typ. at contrast ratio 10:1)
Colour Depth [bn]: 1,076 (10bit)
Response Time (typ.) [ms]: 8
Panel Refresh Rate [Hz]: 60
Supported Orientation: Face Up 1; Landscape; Portrait

Touch8

Touch Technology: PCAP
Number of Touches: Real multi-touch up to 20 touches
Touch Method: Conductive Passive Stylus; Finger
Supported Operating System: Android; Linux; Raspberry Pi; Windows
Data Interface: USB-HID
Accuracy [mm]: +/- 1.5
Windows Ink: No
Palm Rejection: No

Protective Glass4

Thickness [mm]: 3.5
Light Transmission [%]: 85 (+/- 5 %)
Haze Level [%]: 5 ~ 10
Hardness [H]: 6

Resolution2

Native Resolution: 3840 x 2160
Supported Resolutions: 1024 x 768; 1280 x 1024; 1280 x 720; 1360 x 768; 1366 x 768; 1400 x 1050; 1440 x 900; 1600 x 1200; 1650 x 1050; 1900 x 1200; 1920 x 1080; 1920 x 2160; 2560 x 1440; 2560 x 1600; 3840 x 2160; 4096 x 2160

Synchronisation Rate2

Horizontal Frequency [kHz]: 26 - 91.1
Vertical Frequency [Hz]: 23 - 86

Connectivity7

Input Video Digital: 1 x DisplayPort (with HDCP); 2 x HDMI (with HDCP)
Input Audio Digital: 1 x DisplayPort; 2 x HDMI
Input Control: LAN 100Mbit; remote control wire (3,5mm jack); RS232
Input Data: 1 x USB 2.0 (MediaPlayer)
Output Audio Analogue: 1 x 3,5 mm jack
Input Detect: Custom; First; Last
PiP/PbP: Quad-Split; scalable picture size; Triple-Split

Open Modular Intelligence2

Intel® SDM: accepts Intel® Smart Display Modules Large and Small up to 66 W
Compute Module Slot: RPi Compute Module 4

Sensors1

Temperature Sensor: Integrated, 3 sensors, triggered actions programmable

Electrical4

Power Consumption [W]: 110 shipping
Power Savings Mode [W]: < 0.5; < 2 (Networked Standby)
Power Management: VESA DPMS
Power Supply: 100-240 V AC; 50/60 Hz; internal

Environmental Conditions4

Operating Temperature [°C]: +0 to +35
Operating Humidity [%]: 20 to 80
Storage Humidity [%]: 10 to 90
Storage Temperature [°C]: -20 to 60

Mechanical7

Dimensions (W x H x D) [mm]: 1,275.8 x 746.8 x 67.8
Weight [kg]: 36.4
Bezel Width [mm]: Edge-to-edge flush design (no bezel)
VESA Mounting [mm]: 300 x 300 (FDMI); 4 holes; M6
Ingress Protection: IP5x (front); IP2x (back)
Packaging Dimensions (W x H x D) [mm]: Box 1: 1,430 x 920 x 250
Packaging Weight [kg]: Box 1: 46.5

MediaPlayer4

Supported File Storage / File System: USB 2.0 / FAT16, FAT32
Supported Image Formats: JPG (baseline, progressive, RGB, CMYK); max. resolution 15360 x 8640
Supported Video Formats: MPG (MPEG1/2/4, max res 1080p@30Hz); MP4 (MPEG2/4, H.263, H.264, HEVC/H.265, max res 3840x2160@60Hz); TS (MPEG2, H.264, HEVC/H.265, max res 3840x2160@60Hz); audio: LPCM, MP3, AAC; WMV (video H.264, Windows Media Video 9, max res 1080p@30Hz, audio WMA 9, WMA 10 Pro)
Supported Audio Formats: MP3 (MP3); max. bit-rate 320 kBit/s

Available Options1

Accessories: Presence Sensor (KT-RC3); Soundbar (SP-ASCM-IQ2, SP-ASCM-2); Speaker (SP-RM3a); Trolley (PD04 Tipster Trolley); Wall mount (PDW S 32-65 L, PDW S 32-65 P)

Regulatory2

Safety and Ergonomics: CE; EAC; RoHS
Pixel Failure Class: ISO 9241-307, Class 1

Green Features2

Energy Efficiency: Energy Consumption: 100 kWh/1000 h; LED Backlight
Ecological Standards: EnergyStar 8.0

3rd Party Certifications2

Barco ClickShare: Tested compatible for Barco ClickShare (Conference)
Crestron: Certified for Crestron Connected

Additional Features8

Special Characteristics: DICOM Simulation; HDMI ARC; NaViSet Administrator 2 - free download; Powered USB Port (10 W)
Audio: Integrated Speakers (10 W + 10 W)
Shipping Content: 2x AAA batteries; Display; HDMI Cable; Power Cable; Remote Control; Setup Manual; USB cable
Warranty: 3 years warranty incl. backlight; additional services available
Operating Hours: 24/7
External Control: AMX NetLinx Support; ASCII Control Commands; Crestron Connected; HDMI CEC; HTTP Browser; PJLink; Scheduled Timer; SNMP
Remote Management: Automated Email Alerts; NaViSet Administrator 2
Security: Disable HW Buttons; Disable IR Functionality; Emergency Notification

Downloads

8 files from the manufacturer

PDF Datasheets M551 PCAP_Datasheet.pdf 269 KB PDF Manuals & guides External_Control_Mxx1_MExx1_Series_EN_Rev1.0.pdf 620 KB PDF Manuals & guides OperationGuidelines-LargeFormat.pdf 455 KB PDF Manuals & guides SharpNEC_installation_orientation_guideline.pdf 247 KB PDF Brochures Warranty-and-Services_Interactive_Computing.pdf 1.0 MB PDF Brochures · Opens on manufacturer site SharpProduct_Overview.pdf PDF Drawings & CAD Drawing_NEC_M551-PCAP_rev1.0.PDF 552 KB DWG Drawings & CAD · Opens on manufacturer site Drawing_NEC_M551-PCAP_rev1.0.DWG

Questions about M551 PCAP

Is the NEC M551 PCAP still in production?

No. NEC has discontinued the M551 PCAP, so this page is for organisations that already own one, buyers comparing options and anyone searching for a replacement. Request a quote from SmartRooms Qatar for a current equivalent or compatible replacement. We will confirm what can be supplied in the quotation, which is usually issued within one working day.

What should I look for in a replacement for an M551 PCAP?

Start with the existing setup: a 55-inch screen, 3840 x 2160 resolution, PCAP touch that supports finger and pen, and your current input sources. Send us the wall or trolley arrangement and the room conditions. This model is rated for 0 to +35 °C and IP5x at the front, so a replacement should suit the same temperature and dust exposure.

Does the M551 PCAP support pen writing and multi-touch?

Yes. The PCAP layer reads up to 20 touches and responds to finger and conductive passive stylus input. The specification does not list Windows Ink or palm rejection, so if your team rests a hand on the screen while writing with a pen, confirm that workflow with us before ordering.

Which room suits a 55-inch touch display in Qatar?

A 55-inch panel suits a boardroom, huddle room, classroom or small reception area where people sit or stand at close range. In a Doha boardroom where a small team reviews shared drawings, the 3840 x 2160 resolution keeps fine detail sharp at this size, and the 500 cd/m² panel supports clear viewing of shared content.

Can it sit in a sunlit lobby or next to a glass wall?

Only in a climate-controlled area. The operating range is 0 to +35 °C with 20 to 80% humidity, while Qatar summer temperatures can exceed 45 °C. Direct sun through glazing can raise the temperature at the screen above its listed range. The IP5x front rating also gives limited dust protection, so avoid open, dusty positions during dust storms.

Will it work on Qatar's 240 V mains supply?

The internal power supply accepts 100-240 V AC at 50/60 Hz, which covers the 240 V, 50 Hz mains used in Qatar. Ask your electrician to confirm the socket and cable route before installation. In power savings mode the unit draws under 0.5 W, which helps when a display runs around the clock.

How do we wall-mount a 36.4 kg panel safely?

Use the 300 x 300 mm VESA pattern with M6 holes, and check the wall structure first. The unit weighs 36.4 kg, and NEC lists the PDW S 32-65 L and PDW S 32-65 P wall mounts as available options. We offer free site surveys before wall-mounting a panel this size, so the wall, fixings and cable routing are checked before installation day.

Is it compatible with Barco ClickShare or Crestron?

NEC states the M551 PCAP is tested compatible with Barco ClickShare (Conference) and certified for Crestron Connected. It also supports external control through AMX NetLinx, PJLink and SNMP. If your meeting rooms rely on a wireless presentation system, confirm your exact ClickShare model with us before requesting a quote.

Can we manage several displays across a ministry or campus?

Yes. NEC NaViSet Administrator 2 is a free download for remote management and sends automated email alerts when maintenance is needed. Each unit has a 100 Mbit LAN port, RS232 control, SNMP support and scheduled timers. This suits an organisation with several floors that wants to monitor displays from a central support desk.

Can it play signage from a USB drive without a PC?

Yes, through its USB 2.0 media port. Storage must use FAT16 or FAT32. The player handles JPG images and MP4 or TS video up to 3840 x 2160 at 60 Hz, with WMV video up to 1080p at 30 Hz. This suits a hotel or clinic reception screen that loops menus, directions or announcements.

Does it have built-in speakers?

Yes, it has integrated speakers rated 10 W + 10 W and a 3.5 mm audio output for feeding an external sound system. In classrooms and small meeting rooms, the built-in speakers cover short presentations. Larger halls may need an external option, and NEC lists soundbars and speakers among its available accessories.

How do schools and government offices order this unit?

Send a purchase order or LPO that references the quotation, and SmartRooms Qatar will invoice against it. Government buyers can respond to tenders on Monaqasat. Payment is accepted by bank transfer, cheque or purchase order. Because the M551 PCAP is discontinued, ask for a current equivalent in the quotation so the specification matches your tender.