TP-Link Deco X55 AX3000 mesh Wi-Fi 6 system
- Category
- Routers
- Model number
- Deco X55, Deco X55 V3
- Region
- Global
- Verified
- Status LED, pulsing yellow
- Status LED, solid yellow
- Status LED, pulsing blue
- Status LED, solid blue
- Status LED, pulsing green
- Status LED, solid green
- Status LED, pulsing red
- Status LED, solid red
- The main Deco does not pulse blue during setup
- The Deco app shows an error while setting up the main Deco
- A satellite Deco does not join the network
- How to reset the Deco with the Reset button
- How to reset a Deco unit in the Deco app
- How to reboot a Deco unit or the whole network
- How to update the Deco firmware in the app
- How to update the Deco firmware from the web page
- How to change the Wi-Fi name and password in the Deco app
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Indicator lights
| Indicator | Meaning | Checks |
|---|---|---|
| Status LED, pulsing yellow | The Deco is resetting. | Checks |
| Status LED, solid yellow | The Deco is starting up. | Checks |
| Status LED, pulsing blue | The Deco is ready for setup. | Checks |
| Status LED, solid blue | The Deco is setting up. | Checks |
| Status LED, pulsing green | The Deco is upgrading firmware. | Checks |
| Status LED, solid green | The Deco is all set up and connected. | Checks |
| Status LED, pulsing red | The satellite Deco is disconnected from the main Deco. | Checks |
| Status LED, solid red | The Deco has an issue. On the main Deco, it cannot reach the Internet. | 2 causes |
Status LED, pulsing yellow
The LED pulses yellow. The Deco is resetting.
Source Source: Appearance, p. 2
Status LED, solid yellow
The LED is solid yellow. The Deco is starting up.
- Wait one to two minutes for the start-up to finish.
Source Source: Quick Reference: Common Deco LED Colors and Key Takeaways, p. 1
Status LED, pulsing blue
The LED pulses blue. The Deco is ready for setup.
- Set the Deco up in the Deco app.
Source Source: Appearance, p. 2
Status LED, pulsing green
The LED pulses green. The Deco is upgrading firmware.
Source Source: Appearance, p. 2
Status LED, solid green
The LED is solid green. The Deco is all set up and connected.
Source Source: Appearance, p. 2
Status LED, pulsing red
The LED pulses red. The satellite Deco is disconnected from the main Deco.
Source Source: Appearance, p. 2
Problems
- The main Deco does not pulse blue during setup2 causes in the manual. First: the LED on the main Deco is not pulsing blue.
- The Deco app shows an error while setting up the main Deco2 causes in the manual. First: the app reports that the Ethernet cable is not connected (Unable to complete WAN setup).
- A satellite Deco does not join the networkThe app shows Failed to Add This Device or Couldn't Find Any New Deco while you add a satellite.
A satellite Deco does not join the network
The app shows Failed to Add This Device or Couldn't Find Any New Deco while you add a satellite. Source: Error: Couldn't Find Any New Deco and Error: Failed to Add This Device (Deco X, XE, and BE series), p. 1
- Reset the satellite Deco.
- Wait for its Status LED to turn solid green, then add it again.
- Move the satellite Deco closer to the main Deco during setup.
How-to
- How to reset the Deco with the Reset buttonWhen you want to wipe one Deco unit and return it to factory defaults.
- How to reset a Deco unit in the Deco appWhen the Deco is online and you want to reset it without the Reset button.
- How to reboot a Deco unit or the whole networkWhen you want to restart the Deco and keep its settings.
- How to update the Deco firmware in the appWhen you want to check for or install new Deco firmware.
- How to update the Deco firmware from the web pageWhen you downloaded a firmware file from www.tp-link.com that matches your Deco model and hardware version.
- How to change the Wi-Fi name and password in the Deco appWhen you want a new Wi-Fi name or password for the Deco network.
LED meanings
| Light | Colour | State | Meaning |
|---|---|---|---|
| Status | Yellow | pulsing | The Deco is resetting. |
| Status | Yellow | on | The Deco is starting up. |
| Status | Blue | pulsing | The Deco is ready for setup. |
| Status | Blue | on | The Deco is setting up. |
| Status | Green | pulsing | The Deco is upgrading firmware. |
| Status | Green | on | The Deco is all set up and connected. |
| Status | Red | pulsing | The satellite Deco is disconnected from the main Deco. |
| Status | Red | on | The Deco has an issue. On the main Deco, it cannot reach the Internet. |
Specifications
Each Deco X55 unit has one LED that changes colour with its status, three RJ-45 Ethernet ports, a power slot and a Reset button. Source: Appearance, p. 2
Setup runs in the TP-Link Deco app for iOS or Android. Additional Decos from the same package join the network automatically within 2 minutes after they are plugged in. Source: Set Up Your Deco, steps 1 to 10, pp. 3 to 6
The product label is on the bottom of the unit. Source: Appearance, p. 2
| Ports | Three RJ-45 Ethernet ports and a power slot. | Source: Appearance, p. 2 |
|---|---|---|
| Operating temperature | 0°C to 40°C (32°F to 104°F). | Source: Safety Information, p. 12 |
Recalls
No exact-model match for Deco X55 in the U.S. Consumer Product Safety Commission recall database, checked . Recalls can name model families, so also check current recalls for TP-Link.
Service contact
TP-Link Technical Support, tp-link.com/support. Contact Technical Support page at tp-link.com/support, and the Help center of the Deco app. Source: About This Guide, More Info, p. 1
Sources
- User Guide, AX3000 Whole Home Mesh Wi-Fi 6 System Deco X55 (EU, V3.0). TP-Link Systems Inc. Document 1910013645, revision REV3.0.0, 2024, 16 pages, en-US. static.tp-link.com (PDF). Retrieved 13 November 2026.
- What Do Deco LED Colors Mean?. TP-Link Systems Inc. Document FAQ 1464, revision Last updated 2017-01-17, 2017-01-17, 1 pages, en-US. tp-link.com. Retrieved 13 November 2026.
- TP-Link Deco Solid Red Light: What It Means and How to Fix It. TP-Link Systems Inc. Document FAQ 3672, revision Last updated 2023-06-15, 2023-06-15, 1 pages, en-US. tp-link.com. Retrieved 13 November 2026.
- Main Deco Failed to Complete Setup. TP-Link Systems Inc. Document FAQ 2239, revision Last updated 2023-07-12, 2023-07-12, 1 pages, en-US. tp-link.com. Retrieved 13 November 2026.
- How to Reset Deco: Reset or Reboot Your Deco Whole-Home Wi-Fi System. TP-Link Systems Inc. Document FAQ 1457, revision Last updated 2026-10-08, 2026-10-08, 1 pages, en-US. tp-link.com. Retrieved 13 November 2026.
- Deco Wi-Fi Settings. TP-Link Systems Inc. Document FAQ 1591, revision Last updated 2026-04-17, 2026-04-17, 1 pages, en-US. tp-link.com. Retrieved 13 November 2026.
- How to Update or Upgrade TP-Link Deco Firmware (3 Methods). TP-Link Systems Inc. Document FAQ 1599, revision Last updated 2026-08-24, 2026-08-24, 1 pages, en-US. tp-link.com. Retrieved 13 November 2026.
- Error When Adding a Deco Satellite Node: How to Fix It. TP-Link Systems Inc. Document FAQ 1447, revision Last updated 2026-05-07, 2026-05-07, 1 pages, en-US. tp-link.com. Retrieved 13 November 2026.
Page numbers are the numbers printed in the manual. Where this page and the manual differ, follow the manual.
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