TP-Link Archer AX21 AX1800 Wi-Fi 6 router
- Category
- Routers
- Model number
- Archer AX21, Archer AX21 V4.6
- Region
- United States
- Verified
- Power LED on
- Power LED blinking
- Power LED off
- 2.4 GHz Wireless LED on
- 2.4 GHz Wireless LED off
- 5 GHz Wireless LED on
- 5 GHz Wireless LED off
- Internet LED, Green on
- Internet LED, orange
- Internet LED off
- Ethernet LED on
- Ethernet LED off
- WPS LED on
- WPS LED blinking
- No internet access after setup is finished
- How to reset the router with the Reset button
- How to reset the router from the web page
- How to recover a forgotten web management password
- How to change the Wi-Fi name and password
- How to connect a device with WPS
- How to update the firmware from the web page
- How to update the firmware from a downloaded file
- How to set up the router as an access point
Nothing on this page matches. Search all models
Indicator lights
| Indicator | Meaning | Checks |
|---|---|---|
| Power LED on | The system has started up successfully. | Checks |
| Power LED blinking | The router is starting up or the firmware is being upgraded. | Checks |
| Power LED off | The router has no power. | Checks |
| 2.4 GHz Wireless LED on | The 2.4 GHz wireless band is enabled. | Checks |
| 2.4 GHz Wireless LED off | The 2.4 GHz wireless band is disabled. | Checks |
| 5 GHz Wireless LED on | The 5 GHz wireless band is enabled. | Checks |
| 5 GHz Wireless LED off | The 5 GHz wireless band is disabled. | Checks |
| Internet LED, Green on | Internet service is available. | Checks |
| Internet LED, orange | The Internet port is connected, but internet service is not available. | Checks |
| Internet LED off | The Internet port is unplugged. | Checks |
| Ethernet LED on | At least one powered-on device is connected to an Ethernet port. | Checks |
| Ethernet LED off | No powered-on device is connected to an Ethernet port. | Checks |
| WPS LED on | A WPS connection was established. | Checks |
| WPS LED blinking | A WPS connection is in progress. | Checks |
Power LED on
The Power LED is lit. The system has started up successfully.
Power LED blinking
The Power LED is flashing. The router is starting up or the firmware is being upgraded.
- Leave the router connected to power until the LED stops flashing.
Power LED off
The Power LED is off. The router has no power.
- Press the Power On/Off button on the back panel to power on the router.
2.4 GHz Wireless LED on
The 2.4 GHz Wireless LED is lit. The 2.4 GHz wireless band is enabled.
2.4 GHz Wireless LED off
The 2.4 GHz Wireless LED is off. The 2.4 GHz wireless band is disabled.
- Press and hold the WPS/Wi-Fi button for more than 2 seconds to turn the wireless function on.
5 GHz Wireless LED on
The 5 GHz Wireless LED is lit. The 5 GHz wireless band is enabled.
5 GHz Wireless LED off
The 5 GHz Wireless LED is off. The 5 GHz wireless band is disabled.
- Press and hold the WPS/Wi-Fi button for more than 2 seconds to turn the wireless function on.
Internet LED, Green on
The Internet LED is solid green. Internet service is available.
Internet LED, orange
The Internet LED is solid orange. The Internet port is connected, but internet service is not available.
- Follow the checks for no internet access after setup. See No internet access after setup is finished.
Internet LED off
The Internet LED is off. The Internet port is unplugged.
Ethernet LED on
The Ethernet LED is lit. At least one powered-on device is connected to an Ethernet port.
Ethernet LED off
The Ethernet LED is off. No powered-on device is connected to an Ethernet port.
WPS LED on
The WPS LED is lit. A WPS connection was established.
WPS LED blinking
The WPS LED is blinking. A WPS connection is in progress.
Problems
- No internet access after setup is finished2 causes in the manual. First: advanced > Network > Status shows a valid IP address, but nothing loads.
How-to
- How to reset the router with the Reset buttonWhen you want to restore factory default settings, or cannot log in and cannot recover the password.
- How to reset the router from the web pageWhen you can log in at http://tplinkwifi.net and want factory defaults.
- How to recover a forgotten web management passwordWhen you cannot log in at http://tplinkwifi.net.
- How to change the Wi-Fi name and passwordWhen you want a new wireless network name (SSID) or password.
- How to connect a device with WPSWhen a device supports WPS and you want to join it to the Wi-Fi without typing the password.
- How to update the firmware from the web pageWhen the update icon shows in the top-right corner of the web page, or you want to check for new firmware.
- How to update the firmware from a downloaded fileWhen you downloaded a firmware file for the router from www.tp-link.com.
- How to set up the router as an access pointWhen you want the router to add Wi-Fi to an existing wired network.
LED meanings
| Light | Colour | State | Meaning |
|---|---|---|---|
| Power | on | The system has started up successfully. | |
| Power | blinking | The router is starting up or the firmware is being upgraded. | |
| Power | off | The router has no power. | |
| 2.4 GHz Wireless | on | The 2.4 GHz wireless band is enabled. | |
| 2.4 GHz Wireless | off | The 2.4 GHz wireless band is disabled. | |
| 5 GHz Wireless | on | The 5 GHz wireless band is enabled. | |
| 5 GHz Wireless | off | The 5 GHz wireless band is disabled. | |
| Internet | Green | on | Internet service is available. |
| Internet | Orange | on | The Internet port is connected, but internet service is not available. |
| Internet | off | The Internet port is unplugged. | |
| Ethernet | on | At least one powered-on device is connected to an Ethernet port. | |
| Ethernet | off | No powered-on device is connected to an Ethernet port. | |
| WPS | on | A WPS connection was established. | |
| WPS | blinking | A WPS connection is in progress. |
Specifications
The TP-Link user guide for the Archer AX21 V4.6 defines six LEDs on the front: Power, 2.4 GHz Wireless, 5 GHz Wireless, Internet, Ethernet and WPS, with the Internet LED showing green or orange. Source: 1.2.1 Top Panel, LED Explanation, pp. 4, 5
The preset wireless network name (SSID) and password are printed on the label of the router. Source: 6.1 Specify Wireless Settings, p. 28
| Ports | Four LAN ports (1-4) and one WAN port. | Source: 1.2.2 Back Panel, Button and Port Explanation, p. 6 |
|---|---|---|
| Wireless bands | 2.4 GHz and 5 GHz. | Source: 1.2.1 Top Panel, LED Explanation, p. 5 |
| Web management addresses | http://tplinkwifi.net or http://192.168.0.1. | Source: FAQ Q3 Cannot log in to the web management page, p. 96 |
Recalls
No exact-model match for Archer AX21 in the U.S. Consumer Product Safety Commission recall database, checked . Recalls can name model families, so also check current recalls for TP-Link.
Sources
- User Guide, AX1800 Dual Band Wi-Fi 6 Router Archer AX21 (US, V4.6). TP-Link Systems Inc. Document 1910013415, revision REV4.6.0, 2023, 115 pages, en-US. static.tp-link.com (PDF). Listed on the manufacturer's support page. Retrieved 13 November 2026.
Page numbers are the numbers printed in the manual. Where this page and the manual differ, follow the manual.
All TP-Link handbooks. Report an error to hello@modelhandbook.com.