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Reference: ST3450857SS
Brand: Seagate
ST3450857SS _ RFB
Seagate Cheetah 450GB 3.5, 450 GB, 15000 RPM, 16 MB, 3.5", SAS
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CDE55G3-1C
CDE55G3-1C, 55", OS-Free Architecture, ProAV Integration, UHD 4K (3840x2160), 500nits, 24/7, USB-C, 4GB RAM/32GB Storage, 2x10W Speakers. Landscape & Portrait Mode
Description
The ViewSonic CDEG3 Series is an OS-free commercial display designed for secure, round-the-clock operation in mission-critical environments across corporate, government, healthcare, and higher education sectors. By eliminating pre-installed apps and background services, it reduces software attack surface while supporting fast boot times and simplified IT management. With native 4K UHD resolution in both landscape and portrait orientation, 500-nit brightness, and built-in USB media playback, this secure signage solution ensures clear visibility for announcements and digital displays in high-traffic environments. It also features extended connectivity options including USB-C, HDMI 2.1, LAN, and RS-232, making it well-suited for BYOD meetings and video conferencing. To further streamline remote device management, the commercial-grade display integrates with leading ProAV control systems. Certified EPEAT® Gold, CDEG3 Series digital displays offer a low-maintenance, sustainable solution that balances security, performance, and operational efficiency for any mission-critical space.
Purpose-Built for Security-Sensitive Environments
The CDEG3 Series enhances security by adopting an OS-free architecture with no pre-installed apps, background services, or third-party systems. This design reduces software attack surface and simplifies long-term device management for corporate offices, government institutions, hospitals, and other sensitive environments.
Fast Cold Boot for Seamless Communication
With cold boot in under 8 seconds*, the CDEG3 Series eliminates delays at the start of meetings, presentations, and scheduled signage. This commercial-grade display ensures content appears exactly when it’s needed, operating 24/7 in corporate, retail, and education environments where every second counts.*Cold boot under 8 seconds supported via HDMI 2 and 3 only.
Universal Connectivity for BYOD Setups
This presentation display supports BYOD in classrooms and meeting rooms with USB-C (DP1.2, HDCP) and HDMI 2.1 ports, allowing both guest and internal users to connect personal devices and share content securely without accessing the internal network.
Landscape and Portrait Orientation
Supporting both landscape and portrait modes, this commercial-grade display adapts to a wide range of installation needs, from digital menu boards to meeting room signage, and school displays.
Bright, Clear Images
With 4K UHD resolution and 500 nits of brightness, the CDEG3 Series delivers vivid, detailed images even in well-lit environments. Ideal for meeting rooms and public displays, it ensures content remains clear, engaging, and easy to read.
Built for a Lower Environmental Impact
Designed with sustainability in mind, the CDEG3 Series is the first large format display to earn EPEAT Gold certification. Combined with ENERGY STAR compliance, it offers businesses, schools, and institutions an energy-efficient solution that reduces environmental impact while maintaining high performance.
Purpose-Built for Security-Sensitive Environments
The CDEG3 Series enhances security by adopting an OS-free architecture with no pre-installed apps, background services, or third-party systems. This design reduces software attack surface and simplifies long-term device management for corporate offices, government institutions, hospitals, and other sensitive environments.
Fast Cold Boot for Seamless Communication
With cold boot in under 8 seconds*, the CDEG3 Series eliminates delays at the start of meetings, presentations, and scheduled signage. This commercial-grade display ensures content appears exactly when it’s needed, operating 24/7 in corporate, retail, and education environments where every second counts.*Cold boot under 8 seconds supported via HDMI 2 and 3 only.
Universal Connectivity for BYOD Setups
This presentation display supports BYOD in classrooms and meeting rooms with USB-C (DP1.2, HDCP) and HDMI 2.1 ports, allowing both guest and internal users to connect personal devices and share content securely without accessing the internal network.
Landscape and Portrait Orientation
Supporting both landscape and portrait modes, this commercial-grade display adapts to a wide range of installation needs, from digital menu boards to meeting room signage, and school displays.
Bright, Clear Images
With 4K UHD resolution and 500 nits of brightness, the CDEG3 Series delivers vivid, detailed images even in well-lit environments. Ideal for meeting rooms and public displays, it ensures content remains clear, engaging, and easy to read.
Built for a Lower Environmental Impact
Designed with sustainability in mind, the CDEG3 Series is the first large format display to earn EPEAT Gold certification. Combined with ENERGY STAR compliance, it offers businesses, schools, and institutions an energy-efficient solution that reduces environmental impact while maintaining high performance.
- OS-Free Architecture minimizes vulnerabilities in secure and sensitive environments.
- USB-C and HDMI 2.1 connectivity supports easy BYOD use without additional adapters.
- Fast cold boot and 24/7 operation ensures instant power-on and nonstop performance.
- Built-in USB media playback supports offline content delivery and digital signage.
- ProAV system integration enables centralized control
- EPEAT® Gold certification supports sustainable, large-scale commercial deployments.
- 500-nit brightness and 4K UHD resolution deliver vivid visuals in any orientation.
Specifications
Audio
| Built-in speaker(s) | Yes |
| Number of built-in speakers | 2 |
| RMS rated power | 20 W |
Design
| Anti-glare screen | Yes |
| Bezel width (bottom) | 1.59 cm |
| Bezel width (side) | 1.59 cm |
| Bezel width (top) | 1.59 cm |
| Orientation | Horizontal/Vertical |
| Panel mounting interface | 400 x 400 mm |
| Placement supported | Indoor |
| Product colour | Black |
| Product design | Digital signage flat panel |
| Screen shape | Flat |
| VESA mounting | Yes |
Display
| Active display area (W x H) | 1209.6 x 680.4 mm |
| Contrast ratio (typical) | 5000:1 |
| Display brightness | 500 cd/m² |
| Display diagonal | 55 " |
| Display resolution | 3840 x 2160 pixels |
| Display technology | LCD |
| Haze rate | 25 % |
| HD type | 4K Ultra HD |
| LED backlight | Yes |
| LED backlighting type | Direct-LED |
| Native aspect ratio | 16:9 |
| Panel life | 50000 h |
| Panel type | TFT |
| Response time | 6.5 ms |
| Surface hardness | 3H |
| Touchscreen | No |
| Viewing angle, horizontal | 178 ° |
| Viewing angle, vertical | 178 ° |
Logistics data
| Pallet gross height | 181 cm |
| Pallet gross length | 114 cm |
| Pallet gross width | 144.5 cm |
| Products per master (outer) case | 1 pc(s) |
Operational conditions
| Operating relative humidity (H-H) | 20 - 80 % |
| Operating temperature (T-T) | 0 - 40 °C |
Packaging content
| Batteries included | Yes |
| Cables included | AC/HDMI/RS-232 |
| Mounting kit | Yes |
| Remote control included | Yes |
Performance
| HDCP | Yes |
| HDCP version | 1.4/2.2 |
| Operating hours (hours/days) | 24/7 |
| Purpose | Commercial |
Ports & interfaces
| Digital audio optical out | 1 |
| DisplayPort version | 1.2 |
| DisplayPorts quantity | 0 |
| DVI port | No |
| Ethernet LAN | Yes |
| Ethernet LAN (RJ-45) ports | 1 |
| HDMI input ports quantity | 3 |
| HDMI ports quantity | 3 |
| HDMI version | 2.1 |
| PC Audio in | Yes |
| PC Audio out | Yes |
| RS-232 interface | Yes |
| USB connector type | USB Type-A/USB Type-C |
| USB port | Yes |
| USB ports quantity | 3 |
| USB Type-C DisplayPort Alternate Mode | Yes |
| USB version | 2.0 |
| VGA (D-Sub) input ports | 1 |
Power
| AC input voltage | 100 - 240 V |
| Energy efficiency class (SDR) | F |
| Power consumption (typical) | 75.9 W |
Technical details
| Compliance certificates | CB/CE/cTUVus/EAC/Federal Communications Commission (FCC)/RCM/REACH/RoHS/WEEE |
| Sustainability certificates | ENERGY STAR/EPEAT Gold/ErP |
Vendor information
| Brand Name | ViewSonic |
| Warranty | 3 |
Weight & dimensions
| Display depth | 7.86 cm |
| Display height | 71.5 cm |
| Display weight | 14300 g |
| Display width | 124.5 cm |
Product Details
2026-06-12
New
Data sheet
- Panel type
- TFT
- Handheld remote control
- Yes
- HDCP
- Yes
- Native aspect ratio
- 16:9
- Response time
- 6.5 ms
- Anti-glare screen
- Yes
- Haze rate
- 25 %
- Surface hardness
- 3H
- Energy efficiency class (SDR)
- F
- Product design
- Digital signage flat panel
- Bezel width (bottom)
- 1.59 cm
- Bezel width (top)
- 1.59 cm
- Bildschirmhelligkeit
- 500 cd/m²
- Display-Technologie
- LCD
- Anzahl der eingebauten Lautsprecher
- 2
- RMS-Nennleistung
- 20 W
- Blendenbreite (Seite)
- 1.59 cm
- Orientierung
- Horizontal/Vertical
- Schnittstelle für Schalttafeleinbau
- 400 x 400 mm
- VESA-Montage
- Yes
- Aktiver Anzeigebereich (B x H)
- 1209.6 x 680.4 mm
- Betrachtungswinkel horizontal
- 178 °
- Betrachtungswinkel, vertikal
- 178 °
- Kontrastverhältnis (typisch)
- 5000:1
- Batterien enthalten
- Yes
- Betriebsstunden (Stunden/Tage)
- 24/7
- Anzahl der HDMI-Anschlüsse
- 3
- Anzahl der HDMI-Eingangsanschlüsse
- 3
- DVI-Anschluss
- No
- Ethernet-LAN-Anschlüsse (RJ-45)
- 1
- RS-232-Schnittstelle
- Yes
- VGA (D-Sub)-Eingänge
- 1
- DisplayPort-Version
- 1.2
- DisplayPorts Menge
- 0
- Montage Kits
- Yes
- Compliance certificates
- CB/CE/cTUVus/EAC/Federal Communications Commission (FCC)/RCM/REACH/RoHS/WEEE
- Kabel enthalten
- AC/HDMI/RS-232
- USB-Anschluss
- Yes
- Ethernet-LAN
- Yes
- Platzierung unterstützt
- Indoor
- AC-Eingangsspannung
- 100 - 240 V
- Stromverbrauch (typisch)
- 75.9 W
- Nachhaltigkeitszertifikate
- ENERGY STAR/EPEAT Gold/ErP
- Bruttobreite der Palette
- 144.5 cm
- Bruttohöhe der Palette
- 181 cm
- Bruttolänge Palette
- 114 cm
- USB-Version
- 2.0
- Produkte pro Master (Außen)-Case
- 1 Stück(e)
- Anzahl der USB-Anschlüsse
- 3
- Berührungssensitiver Bildschirm
- No
- Bildschirmauflösung
- 3840 x 2160 Pixel
- Diagonale anzeigen
- 55 "
- LED-Hintergrundbeleuchtung
- Direct-LED
- USB-Anschlusstyp
- USB Type-A/USB Type-C
- HDMI-Version
- 2.1
- HDCP-Version
- 1.4/2.2
- HD-Typ
- 4K Ultra HD
- Brand Name
- ViewSonic
- Warranty
- 3
- Betriebstemperatur (TT)
- 0 - 40 °C
- Relative Luftfeuchtigkeit im Betrieb (HH)
- 20 - 80 %
- Zweck
- Commercial
- Produktfarbe
- Black
- Eingebaute(r) Lautsprecher
- Yes
- Optischer Ausgang für digitales Audio
- 1
- USB-Typ-C-DisplayPort-Alternativmodus
- Yes
- Screen shape
- Flat
- Anzeigebreite
- 124.5 cm
- Gewicht anzeigen
- 14300 g
- Höhe anzeigen
- 71.5 cm
- Tiefe anzeigen
- 7.86 cm
- PC-Audioausgang
- Yes
- PC-Audioeingang
- Yes
- Panel-Leben
- 50000 h
Specific References
- UPC
- 766907035667
- MPN
- CDE55G3-1C
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CDE55G3-1C, 55", OS-Free Architecture, ProAV Integration, UHD 4K (3840x2160), 500nits, 24/7, USB-C, 4GB RAM/32GB Storage, 2x10W Speakers. Landscape & Portrait Mode