NEC CB751Q (Discontinued) · Replacements in Qatar

Name: NEC MultiSync CB751Q 75-inch Infrared Touch Collaboration Display
Brand: NEC
SKU: nec-cb751q
Availability: Discontinued

Overview

The NEC MultiSync CB751Q is a 75-inch infrared touch collaboration display with a 3840 x 2160 native panel, up to 20 simultaneous touch points and an embedded computer with Mosaic Connect for wireless presentation. NEC has discontinued this model, so Qatar buyers who already run it, or who need a replacement, should request a quote for a current equivalent or compatible model.

What the NEC CB751Q is and why it is discontinued

The NEC MultiSync CB751Q is a 75-inch LCD collaboration display with infrared touch, part of the MultiSync CB Series. Its IPS panel uses direct LED backlighting and a 3840 x 2160 native resolution in a 16:9 format. Typical contrast is 1100:1, and viewing angles reach 178 degrees horizontally and vertically at a contrast ratio above 10:1, so people seated off-axis still see a clear picture.

NEC has discontinued this model. If your organisation already runs one, or you are comparing it with newer displays, request a quote from SmartRooms Qatar for a current equivalent or a compatible replacement.

Touch, computing and connections explained

The infrared touch layer supports up to 20 simultaneous touches and responds to fingers, gloves and styluses of at least 8 mm, with accuracy below 2 mm. Windows Ink and palm rejection are not supported, so test any pen-based workflow in Windows applications before you buy.

An embedded computer with 2G RAM and 16GB storage runs a whiteboard, web browser, file manager and the free Mosaic Connect wireless presentation tool, so presenters can share without a cable. Connections include three HDMI inputs, one VGA input, audio input and output jacks, an SPDIF output, 100Mbit LAN and RS232 control, plus two USB Type-B upstream ports and six USB 2.0 downstream ports, with USB access from the front.

The OPS slot accepts plug-in computing modules rated up to 3.5 A and 63 W. Options listed for this slot include an HDBaseT receiver and Intel Atom, Celeron and Core CPU modules. The Active Collaboration Soundbar SP-ASCM is not supported with the embedded computer, but the panel includes two 12 W speakers.

Where a 75-inch collaboration display fits in Qatar

Boardrooms in West Bay or Lusail: a 75-inch screen suits a mid-sized meeting room where staff in Doha join colleagues abroad by video and annotate a shared document on the panel.
Classrooms in Education City or Al Rayyan: teachers can mark up lessons on the touch surface, and up to 20 touch points let small groups work at the board together.
Lobbies and meeting areas in Msheireb or The Pearl: an air-conditioned reception room can use the display for presentations, with anti-glare toughened glass reducing reflections from daylight.

Environment, power and installation planning

Operating temperature is 0 to +40 °C at 10 to 90 percent humidity. Qatar summers regularly exceed 45 °C, so keep this panel in an air-conditioned room, away from direct sunlight, windows and any outdoor or dusty area. Power use is 205 W in the eco shipment setting and below 0.5 W in ECO standby. Without its stand the panel measures 1,709.4 x 1,020 x 86.8 mm and weighs 52.6 kg, so book a free site survey before wall mounting. The VESA pattern is 800 x 400 mm with M8 fixings, one standard wall mount is included, and trolleys PD02MHM, PD02MHA and PD03MHA are listed as options.

The warranty is three years, including the backlight. To request a quote, send us your room size, mounting plan and number of units. Quotations usually arrive within one working day. We supply, deliver to all eight municipalities of Qatar and install, and accept LPOs, government tenders through Monaqasat, and payment by bank transfer, cheque or purchase order.

Highlights

75-inch IPS panel with 3840 x 2160 native resolution
Infrared touch with up to 20 simultaneous touch points
4 mm toughened anti-glare protective glass
2G RAM, 16GB storage and free Mosaic Connect wireless presentation
Three-year manufacturer warranty including the backlight
Discontinued by NEC; quotes available for current replacements

Classroom fit

At 75″ the farthest student should sit within about 5.6 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

65 specifications · Source: manufacturer · checked Oct 2026

Product Information3

Product Name: NEC MultiSync® CB751Q
Product Group: LCD 75" Infrared Touch Collaboration Display
Order Code: 60004824

Display12

Panel Technology: IPS with Direct LED backlights
Active Screen Area (W x H) [mm]: 1,649.7 x 927.9
Screen Size [inch/cm]: 75 / 189.3
Aspect Ratio: 16:9
Pixel Pitch [mm]: 0.4296
Brightness [cd/m²]: 350, 300 (shipment setting)
Contrast Ratio (typ.): 1100:1
Viewing Angle [°]: 178 / 178 (at contrast ratio > 10:1)
Colour Depth [bn]: 1,073 (10bit)
Response Time (typ.) [ms]: 8 (grey-to-grey)
Haze Level [%]: 3
Supported Orientation: Landscape

Touch8

Touch Technology: Infrared
Number of Touches: Real multi-touch up to 20 touches
Touch Method: Finger; Gloves; Stylus (≥ 8 mm)
Supported Operating System: Native Multi-Touch: Windows 7-11, Linux, Android; Default Mouse: Windows XP and Vista, Mac OS
Data Interface: USB-HID
Accuracy [mm]: < 2
Windows Ink: No
Palm Rejection: No

Protective Glass5

Type: Thermal-tempered, anti-glare coating
Thickness [mm]: 4
Light Transmission [%]: 88 (+/- 1 %)
Reflection Rate [%]: 4
Hardness [H]: 7

Resolution3

Native Resolution: 3840 x 2160
Supported Resolutions: 1920 x 1080; 3840 x 2160; 4096 x 2016
Supported on HDMI only: 3840 x 2160 (60 Hz); 4096 x 2016 (24 Hz)

Synchronisation Rate2

Horizontal Frequency [kHz]: 26 - 135
Vertical Frequency [Hz]: 23 - 86

Connectivity9

Input Video Analogue: 1 x VGA
Input Video Digital: 3 x HDMI
Input Audio Analogue: 1 x 3,5 mm jack
Input Audio Digital: 3 x HDMI
Input Control: LAN 100Mbit; RS232
Input Data: 2 x USB Type-B (Upstream); 6 x USB 2.0 (Downstream)
Output Audio Analogue: 1 x 3,5 mm jack
Output Audio Digital: 1 x SPDIF
Output Control: LAN 100Mbit

Open Modular Intelligence2

OPS Slot: Slot Technology: Open pluggable specification (NEC / Intel OPS standard)
OPS Max. Current / Power Consumption [A / W]: 3.5 / 63

Electrical2

Power Consumption [W]: 205 Eco (shipment setting)
Power Savings Mode [W]: < 0.5 (ECO Standby); < 2 (Networked Standby)

Environmental Conditions2

Operating Temperature [°C]: +0 to +40
Operating Humidity [%]: 10 to 90

Mechanical4

Dimensions (W x H x D) [mm]: Without stand: 1,709.4 x 1,020 x 86.8
Weight [kg]: Without stand: 52.6
Bezel Width [mm]: 17.7 (left/right/top); 45.7 (bottom)
VESA Mounting [mm]: 4 holes; 800 x 400 (FDMI); M8

Embedded Computing3

System Memory: 2G RAM
Internal Storage: 16GB ROM
Built-in Applications: File Manager; Input Select; Setting; Web Browser; Whiteboard - Mosaic Canvas; Wireless Presentatiom - Mosaic Connect

Available Software1

Free Software Included: Mosaic Connect

Available Options2

Accessories: Soundbar (Active Collaboration Soundbar SP-ASCM - not supported by embedded compute); Trolley (PD02MHM, PD02MHA, PD03MHA); Wall mount (BalanceBox 400 MEDIUM; 1x standard wall mount included); Wireless LAN module NP05LM2 (Europe); Wireless LAN Module NP05LM4 (Russia)
OPS Slot: HDBaseT receiver; Intel® Atom, Celeron and Core CPUs; OPS-2C Quad 3G SDI

Regulatory1

Safety and Ergonomics: BSMI; CE; EAC; EMC Class B; FCC; PSB; RCM; REACH; RoHS; SASO; UL/C-UL

Additional Features6

Special Characteristics: AMX NetLinx Support; HDMI with UHD at 60 Hz; NaViSet Administrator 2 - free download; Scheduler
Colour Versions: Black Front Bezel, Black Back Cabinet
Audio: Integrated Speakers (2 x 12 W)
Shipping Content: 3 x Stylus; HDMI Cable; Power Cable; Remote Control; USB cable; User Manual; VGA cable; Wall Mount
Warranty: 3 years warranty incl. backlight
Operating Hours: 12/7

Downloads

4 files from the manufacturer

PDF Datasheets CB751Q_Datasheet.pdf 271 KB PDF Manuals & guides OperationGuidelines-LargeFormat.pdf 455 KB PDF Brochures Warranty-and-Services_Interactive_Computing.pdf 1.0 MB PDF Brochures · Opens on manufacturer site SharpProduct_Overview.pdf

Questions about CB751Q

Who is the NEC CB751Q designed for?

It suits rooms that need one large touch surface for annotation and wireless presentation, such as boardrooms and classrooms. In Qatar it fits a mid-sized meeting room in West Bay or Lusail where a team in Doha connects with colleagues abroad. With a 75-inch screen, 3840 x 2160 resolution and 20 touch points, it supports group work around a single display.

Has NEC discontinued the CB751Q?

Yes. NEC has discontinued this model. If your organisation already owns one and needs an extra unit or is planning a refresh, or you are comparing it with newer displays, send your room size and requirements to SmartRooms Qatar. We will quote a current equivalent or a compatible replacement. Do not assume this exact model is still available from the manufacturer.

Does the touch screen work with gloves and a stylus?

Yes. The infrared touch layer accepts fingers, gloves and styluses, provided the stylus is at least 8 mm in diameter. Touch accuracy is quoted below 2 mm, and up to 20 touch points can work at the same time. Three styluses are included in the box, which helps when several staff use the board in one session.

Can I write with a pen in Windows apps while resting my palm on the screen?

Not with this model. The source data lists Windows Ink and palm rejection as unsupported. Native multi-touch covers Windows 7 to 11, Linux and Android, while mouse support covers Windows XP and Vista and Mac OS. If teachers or managers rely on pen-based note taking in Microsoft Office, confirm that workflow with SmartRooms Qatar before ordering.

What connections does it offer for laptops and video conferencing systems?

It has three HDMI inputs, one VGA input, a 3.5 mm audio input and output, an SPDIF digital audio output, 100Mbit LAN and RS232 control. Two USB Type-B upstream ports link the touch function to a computer, and six USB 2.0 downstream ports serve peripherals. Check that your video conferencing system is compatible with these inputs before you place an order.

Can a presenter share from a laptop without cables in a Doha meeting room?

Yes, through the embedded computer and the free Mosaic Connect wireless presentation tool included with the panel. The embedded computer has 2G RAM and 16GB storage and also runs a whiteboard and web browser. The wireless LAN modules listed are region-specific options, so confirm wireless connectivity for your Qatar site with SmartRooms Qatar before ordering.

How much wall space and mounting support does a 75-inch panel need?

Without its stand, the panel measures 1,709.4 x 1,020 x 86.8 mm and weighs 52.6 kg. It uses an 800 x 400 mm VESA pattern with M8 fixings, and one standard wall mount is included. Before mounting it in a Lusail villa or an office, book a free site survey so your installer can check the wall structure, fixing points and clearance at the planned height.

Will it cope with Qatar's summer heat in a lobby near windows?

Not in an unconditioned or sun-exposed lobby. The operating range is 0 to +40 °C with 10 to 90 percent humidity, while Qatar summer temperatures can exceed 45 °C. Install it in an air-conditioned room away from glass and direct sunlight, and confirm the cooling capacity with your facilities team before choosing the position.

How much power does it draw, and what does standby use?

It draws 205 W in the eco shipment setting. The data lists under 0.5 W in ECO standby and under 2 W in networked standby. Rated operating hours are 12 hours a day, 7 days a week. For a school or office running several units, these figures help with energy planning and with choosing standby settings that match working hours.

Can I add a plug-in computer or a soundbar?

The OPS slot accepts plug-in modules rated up to 3.5 A and 63 W. Listed options include an HDBaseT receiver and Intel Atom, Celeron and Core CPU modules. The Active Collaboration Soundbar SP-ASCM is not supported with the embedded computer on this model. The panel includes two 12 W speakers, so confirm which module you need before ordering.

What warranty applies, and how do we order several units for a school or government office?

The manufacturer's warranty covers three years, including the backlight. A school or government office can order several units on a purchase order (LPO) or through a government tender, including Monaqasat. Send us the quantity, a room list and your mounting plan. We usually return a quotation within one working day, and payment by bank transfer, cheque or purchase order is accepted.