# X-Board 4 Smart All-in-One LED Display

> All-in-one LED display with Android, video conferencing and IoT control for meeting and conference rooms. Four sizes, 108 to 216 inches, wall or floor mount.

LED Express is the North American brand for LED displays: movable LED posters and all-in-one walls, fixed indoor and outdoor LED, and transparent and holographic LED. It serves the United States, Canada and Mexico.

- Web page: https://led.express/products/x-board-4/
- Full content (Markdown): https://led.express/products/x-board-4/index.md
- Language: English. Also in: [Español](https://led.express/es/productos/x-board-4/llms.txt), [Français](https://led.express/fr/produits/x-board-4/llms.txt)

## Key facts

- Type: SMD
- Size: 108 / 135 / 163 / 216 inch
- Pixel pitch: P0.9, P1.3, P1.6
- Service access: Front
- Refresh Rate（Hz）: 2880-3840
- Contrast Ratio: 6000:1
- Viewing Angle（H/V): 160°/160°
- Model: X121B4S-108, X151B4S-135, X181B4S-163, X251B4S-216, X121B4S-216

## Related pages

- [All-in-one displays](https://led.express/products/movable-led-display/all-in-one-led-display/index.md)
- [S-Board](https://led.express/products/s-board/index.md): Smart Interactive Conference Terminal
- [X-Board 4C](https://led.express/products/x-board-4c/index.md): Curved-Frame Intelligent Display
- [F-Board A](https://led.express/products/f-board-a/index.md): Standard Foldable Smart Conference LED
- [Japan Meeting Room Project – F-Board Upgrades Congres Square Osaka Nakanoshima](https://led.express/projects/japan-osaka-nakanoshima-meeting-room-f-board/index.md): Osaka, Japan
- [Request a quote](https://led.express/quote/?display=x-board-4)

## More

- [Site index](https://led.express/llms.txt)
- [All displays](https://led.express/products/index.md)
- [Request a quote](https://led.express/quote/)