1. Ro-ràdh
This manual provides detailed instructions for setting up, operating, maintaining, and troubleshooting your ARRIS SURFboard mAX W21 AX6600 WiFi 6 Mesh Router. The SURFboard mAX W21 is designed to deliver high-speed, reliable WiFi 6 connectivity throughout your home, supporting advanced features like parental controls, Quality of Service (QoS), and smart home integration.

Figure 1: ARRIS SURFboard mAX W21 AX6600 WiFi 6 Mesh Router.
2. Pasgan-susbaint
Dèan cinnteach gu bheil na nithean a leanas anns a’ phacaid agad:
- One (1) ARRIS SURFboard mAX AX6600 Tri-band WiFi 6 Router (Model W21)
- Aon (1) Adaptor Cumhachd
- Aon (1) Càball Ethernet
- Stiùireadh Tòiseachaidh Luath (ma tha e air a ghabhail a-steach)

Figure 2: The ARRIS SURFboard mAX W21 Router and its retail packaging.
3. Suidhich
3.1 Suidheachadh Tùsail
Place your SURFboard mAX W21 router in a central location within your home, away from obstructions and other electronic devices that may cause interference. Ensure it is near a power outlet and your internet modem.

Figure 3: Optimal placement of the ARRIS SURFboard mAX W21 Router on a shelf.
3.2 A ’ceangal an t-slighe
- Connect one end of the Ethernet cable to the LAN port on your internet modem.
- Connect the other end of the Ethernet cable to the WAN/Internet port on your SURFboard mAX W21 router.
- Connect the power adapter to the router's power port and then plug it into a power outlet.
- Wait for the router's LED indicator to show a stable blue light, indicating it is ready for setup.
3.3 Using the SURFboard Central App for Setup
The SURFboard Central app provides step-by-step instructions for a simple and secure setup process. It is required for initial configuration and ongoing management of your network.
- Luchdaich sìos an SURFboard sa mheadhan app from your mobile device's app store (available for iOS and Android).
- Open the app and follow the on-screen prompts to create an account and begin the setup process.
- The app will guide you through connecting to your new WiFi network and configuring its settings, including network name (SSID) and password.

Figure 4: The SURFboard Central app facilitates easy setup and network management.
Bhidio 1: Thar-chrìochview of the ARRIS SURFboard mAX W121, highlighting its benefits for home network users.
4. Ag Obrachadh an Rothair agad
Once set up, the SURFboard Central app becomes your control center for managing your home network. It provides real-time monitoring and optimization features.
4.1 Lìonra aoighean
Create a separate guest network to provide internet access to visitors without sharing your main network password. This enhances security and privacy for your primary devices.
Video 2: Demonstrates the ease of setting up a guest network using the SURFboard mAX system.
4.2 Smachdan Phàrant
Manage internet access for family members with enhanced parental controls. Set time limits, pause internet access for specific devices, and create custom rules directly from the app.
4.3 Càileachd na Seirbheis (QoS)
Prioritize network traffic for specific applications or devices to ensure optimal performance for activities like online gaming, 4K video streaming, or video conferencing.
4.4 Amalachadh Dachaigh Ghlic (IFTTT)
The router supports IFTTT (If This Then That) integration, allowing you to connect and automate your network with various third-party smart home devices and services.

Figure 5: The SURFboard Central app interface displaying network speed and connected devices.
5. Expanding Your Mesh System
The SURFboard mAX W21 is designed to be part of an expandable mesh WiFi 6 system. You can add additional W121 or W21 SURFboard mesh devices to extend coverage and enhance performance throughout larger homes.
- Connect up to three (3) SURFboard mAX routers to create a seamless mesh network.
- Each additional router extends coverage and maintains gigabit speeds.


Figear 6: Examples of expanding your mesh network with additional SURFboard mAX devices.
6. Sònrachaidhean
| Feart | Tuairisgeul |
|---|---|
| Ainm Modail | W21 |
| Brand | ARIS |
| Inbhe gun uèir | 802.11ax (WiFi 6) |
| Clas Còmhlan Tricead | Tri-Band (2.4GHz/5GHz/5GHz High) |
| Ìre gluasad dàta | Up to 6600 Mbps (AX6600) |
| Còmhdach | Up to 2,750 sq ft (per router) |
| Àireamh de phuirt | 2 Gigabit Ethernet LAN ports |
| Modh smachd | App Meadhanach SURFboard |
| Feartan sònraichte | LED Indicator, Parental Control, QoS, Smart Home Compatible (IFTTT) |
| Seòrsa Antenna | Taobh a-staigh |
| Pròtacal Tèarainteachd | WPA-PSK, WPA2-PSK |
| Siostam-obrachaidh | Linux |
| Cuideam nì | 3 Punnd |
| UPC | 850027624020 |

Figure 7: The WiFi 6 Tri-Band Gigabit logo, indicating advanced network capabilities.
Video 3: A comparison highlighting the superior speed and coverage of SURFboard mAX mesh WiFi systems against competitors.
7. A ’dèanamh trioblaid
7.1 Cùisean Coitcheann agus Fuasglaidhean
- Gun cheangal eadar-lìn:
- Check all cable connections between the modem, router, and power outlet.
- Restart your modem and router by unplugging them for 30 seconds and then plugging them back in.
- Verify your internet service is active with your provider. - Astaran WiFi slaodach:
- Ensure your router is centrally located and free from obstructions.
- Check for interference from other electronic devices.
- Use the SURFboard Central app to optimize network settings and prioritize devices. - Cùisean Ceangail App:
- Ensure your mobile device is connected to the SURFboard mAX WiFi network.
- Try force-closing and reopening the SURFboard Central app.
- If issues persist, uninstall and reinstall the app. - Inbhe comharra LED:
- Gorm soladach: Router is online and functioning correctly.
- Gorm a' lasadh: Router is booting up or updating firmware.
- Amber cruaidh: No internet connection or connection issue.
- Amber a' frasadh: Router is attempting to connect to the internet.
7.2 Ath-shuidheachadh Factaraidh
Ma thachras tu air duilgheadasan leantainneach, dh’ fhaodadh ath-shuidheachadh factaraidh an rèiteachadh. Rabhadh: A factory reset will erase all custom settings and return the router to its default factory configuration. You will need to reconfigure your network using the SURFboard Central app.
- With the router powered on, locate the reset button (usually a small pinhole) on the back or bottom of the device.
- Use a paperclip or similar pointed object to press and hold the reset button for approximately 10-15 seconds.
- Release the button when the LED lights begin to flash or change color.
- Allow the router to restart, then proceed with initial setup via the SURFboard Central app.

Figear 8: Cùl view of the router, showing Ethernet ports and the MAC address label, often where the reset button is located.
8. Barantas agus Taic
8.1 Fiosrachadh Barantais
The ARRIS SURFboard mAX W21 router comes with a Barantas 2-bliadhna Earranta. Please retain your proof of purchase for warranty claims. For full warranty terms and conditions, refer to the documentation included with your product or visit the official ARRIS support weblàrach.
8.2 Taic Teicnigeach
For technical assistance, product registration, or to access additional resources, please visit the ARRIS support website or contact their customer service. Ensure you have your product model number (W21) and serial number ready when contacting support.
Taic air-loidhne: www.arris.com/taic