How to set up a Xiaomi router AX4: Complete guide from connectivity to fine optimization

Xiaomi Router Router AX4 — It is a popular home networking solution for its balance of price, performance and functionality, and this dual-band router with Wi-Fi 6 support can deliver speeds of up to 3,000 Mbps, but requires proper setup to unlock its potential. Many users are limited to basic parameters out of the box, unaware that even minimal configuration changes can significantly improve coverage, connection stability and network security.

In this guide, we’ll break down the entire process, from physically connecting a device to fine-tuning for power users. You will learn how to avoid typical errors when you first run, what settings must be changed for security purposes, and how to optimize the network for online gaming, streaming and other online games. 4K-We're going to focus on specific features of MiWiFi firmware that often go unnoticed.

Preparation for the setup: what will be needed

Before you start the configuration of Xiaomi AX4, Make sure you have everything you need, and that will eliminate unexpected pauses in the setup process and help you avoid errors.

• 📦 Router delivery kit: router itself, power supply (12V/1A), network cable (usually) Cat5e length 1 (m) and brief instructions: Check the integrity of the package - damage may indicate possible problems with the device.
• 💻 Device for setting up: laptop, smartphone or tablet with Wi-Fi support. For convenience, we recommend using a PC - some settings are easier to configure through a web interface than through the Mi WiFi mobile application.
• 🔌 Internet access: data to connect from your provider (logins, passwords, connection type – PPPoE, DHCP static IP). If you do not know these parameters, check them in the personal account of the provider or by phone support.
• ⚡ Power supply: socket 220V Avoid using extension cords, which can cause interference, especially if other powerful devices are connected to them.

Also, determine the location of the router in advance. AX4 standard rules:

• 📡 Place the device in the center of the apartment / house for uniform coverage.
• 🚫 Avoid closed cabinets, metal surfaces and household appliances (microwaves, refrigerators) that create interference.
• 🌿 Do not place your router near aquariums or houseplants – moisture can negatively affect the signal.

⚠️ Note: If you are connecting Xiaomi AX4 to an existing network (for example, as a repeater or a second router), pre-disable DHCP on the main device to avoid conflicts IP-address.

Physical connection and first launch

Start by connecting the router to power and the Internet. Put the cable from the power supply in the connector. DC 12V back-bar AX4, Then plug the plug in, and the power indicator should turn blue, which signals that the device is loading successfully, and if the light flashes orange, it indicates an error (more on the indicator values, in the table below).

Connect the Internet cable from the provider to the port WAN (If you're using a PPPoE connection, you can immediately insert the cable into any of the four. LAN-Ports: the router will automatically determine the type of connection. WAN It will not light up green (it can take up to 2 minutes).

Once you've successfully connected to the Internet, you can start setting up Wi-Fi, and by default, the router creates two networks:

• Xiaomi_XXXX_2.4G — range-net 2.4 GHz (long range but lower speed).
• Xiaomi_XXXX_5G — range-net 5 GHz (high speed but less coverage).

The password for both networks is listed on the sticker on the bottom of the router (Wi-Fi Key field). Connect to either of them to navigate to the web interface or mobile application.

Configuring through the web interface: step-by-step instructions

Web interface Xiaomi AX4 It offers more fine-tuning options than a mobile app. To get into it, open your browser and type in the address bar 192.168.31.1 or miwifi.com. The system will request a login and password – by default, this is the admin and password specified on the router sticker (the Router Password field).

After authorization, you will see the main panel with basic network information. For basic configuration, go to Settings. → Quick setup (Settings) → Quick Setup. Here you will be offered:

Let’s look at the key parameters in more detail:

• 🔗 Connection type: Select PPPoE if your provider requires a login/password (e.g. Rostelecom, Beeline). DHCP (automatic IP) You don't have to change anything. IP rarely used – only if the provider has issued fixed addresses.
• 🔒 Wi-Fi password: Set a complex password (at least 12 characters with numbers, letters and special characters) Avoid simple combinations like 12345678 or qwerty, which are easy to crack.
• 📡 Name of the network (SSID): Do not use personal information (for example, Ivanov_Flat). You should use a neutral name to avoid attracting hackers.
• 🔄 Networking: Enable the option of the same name and password for 2.4G and 5G, If you want to allow devices to switch between ranges automatically, this can cause problems with some gadgets (e.g. older smartphones).

After saving the settings, the router will restart (this will take about a week). 1-2 Do not turn off power at this moment - interruption of the process can cause a firmware failure.

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If the Internet does not work after saving the settings, check the cable in the port. WAN Reset the router with the Reset button (hold 5 seconds).

Configure via the Mi WiFi mobile application

For users who prefer to manage the network from a smartphone, Xiaomi offers the official Mi WiFi application (available for Android and iOS), its key advantage is a convenient interface and the ability to remotely control the router (if the Remote Access function is enabled).

To connect:

1. Download the app from Google Play or the App Store.
2. Connect to the router’s Wi-Fi network (password on the sticker).
3. Launch the application and follow the instructions of the setup wizard.

All the main functions are available in the appendix:

• 📊 Traffic monitoring: statistics on connected devices and Internet consumption.
• 🔐 Guest network: creating a separate network for guests with limited access to local resources.
• 🕒 Parental Controls: Limiting Internet Access Time for Certain Devices.
• 🔄 Reboot: Remotely restarting the router without physical access.

However, the mobile version lacks some advanced settings (e.g., QoS or QoS). DDNS), Therefore, for a full configuration, we recommend using a web interface.

⚠️ Note: When you first connect via Mi WiFi, the app may suggest updating the router’s firmware. Do not interrupt the upgrade process – this may lead to the device “bricking” (completely inoperable). Make sure your router is connected to an uninterruptible power supply (UPS) if there are power outages in your area.

Wi-Fi Optimization: How to Increase Speed and Stability

Even after the basic setup, Xiaomi AX4 It may not be working at full capacity. To maximize performance, look at the following parameters:

1. Channel selection and bandwidth

By default, the router selects the channel automatically, but that's not always optimal. Use applications like WiFi Analyzer (Android) or NetSpot (macOS/Windows), Scan the airwaves and select the least loaded channel.

• For 2.4 GHz, channels 1, 6 or 11 (they do not overlap) are recommended.
• For 5 GHz Choose Channels with Numbers 36-48 or 149-165 (Depending on the support of your devices).

channel width 5 GHz set on 80 MHz (if your devices support Wi-Fi) 5/6). For 2.4 Leave it. 20 MHz – a greater width in this range will only increase interference.

2. Enable Wi-Fi 6 (802.11ax)

By default. AX4 It can work in Wi-Fi 5 compatibility mode. To activate Wi-Fi 6, go to: → Wi-Fi → Additional settings → Wi-Fi mode and select 802.11ax.

3. QoS (Quality of Service) setting

QoS allows you to prioritize traffic for certain devices or data types (e.g. online games or video calls). → QoS. We recommend that you prioritize:

• 🎮 Game consoles (PlayStation, Xbox) and PC.
• 📹 Video conferencing devices (Zoom, Teams).
• 📺 Supported TVs 4K-streaming.

4. Disabling unnecessary functions

Some functions can reduce productivity:

• 🔄 WPS: Vulnerable technology, it is better to disable in Settings → Wi-Fi → WPS.
• 📡 Beamforming: Useful only if you have many devices at the edge of coverage.
• 🔗 IPv6: If your provider does not support IPv6, Turn it off in Settings → Network → IPv6.

Network Security: How to Protect a Router from Hacking

Xiaomi routers are often targeted by hackers because of the brand’s popularity. To minimize the risks, follow these steps:

1. Change the administrator password: By default, it's a simple combination that's easy to match. Set a complex password (example: k7#pL9!xQ2$vR4) In the Settings section → System system → Administrator password.
2. Update the firmware: Outdated versions of the software contain vulnerabilities. Check for updates to Settings → System system → Firmware update.
3. Disable Remote Access: If you do not use router control from the outside, disable the option in Settings → System system → Remote access.
4. Set up Firewall: Enable packet filtering and attack blocking in Settings → Security → Firewall.

Additional security measures:

• 🔐 Guest Network: Create a separate network for guests with limited access to local devices.
• 📵 Filtration MAC-Addresses: Allow connection only to trusted devices (setting in Settings) → Wi-Fi → Filter MAC).
• 🔄 Regular reboot: Set up an automatic router reboot once a week (e.g. at 3:00 a.m.) at Settings → System system → Reboot.

⚠️ Note: If you notice in the list of connected devices (Settings) → Devices) unfamiliar gadgets, immediately change the Wi-Fi password and check the router for malware using the utility Dr.Web CureIt (download on the official website).

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Use different passwords to access Wi-Fi and router admin panels, which will prevent attackers from accessing settings even if they connect to your network.

Additional features: what else can Xiaomi AX4

In addition to the basic features, Xiaomi AX4 Supports a number of advanced features that can be useful in specific scenarios:

1. Repeater mode (Repeater)

If you already have a main router, but need to expand the coverage area, AX4 You can use it as a repeater:

1. Connect to the main network.
2. Go to Settings. → Mode of work → Repeater.
3. Select the network to repeat and enter its password.

Please note: in this mode, the speed will be lower than with direct connection.

2.Tune in. DDNS remotely

Function DDNS It allows you to get a permanent domain address for your router, even if the provider issues a dynamic one. IP. It's useful:

• 🖥️ Remote access to your home PC.
• 📹 Viewing CCTV cameras.
• 🔧 Smart home management.

To set up, go to Settings → Network → DDNS and select a service (e.g. No-IP) to register an account on the provider's website. DDNS and enter the data in the router.

3. IPTV and prioritizing traffic

If you use IPTV (For example, from Rostelecom or MTS, turn the appropriate mode into Settings → Network → IPTV. Select a port. LAN, which is connected to the console and set the type IGMP Proxy or Bridge (depending on the provider's requirements).

4. USB-port and file server

Xiaomi AX4 ported USB 3.0, which you can connect an external drive (hard drive or flash drive) and organize a home file server or media center:

1. Connect the drive to the router.
2. Go to Settings. → USB-setting → Public access.
3. Enable Samba (for Windows) or FTP (for cross-platform access).
4. Configure access rights (we recommend creating a separate user with limited rights).

Now you can access files from any device on the local network at the address \\192.168.31.1 (for Samba or ftp://192.168.31.1 (for FTP).

Troubleshooting: What to do if something goes wrong

Even after you set up correctly, you can have problems, and let's look at typical situations and how to solve them.

If the problem is not solved, try resetting the router to factory settings:

1. Press and hold the Reset button on the back (10-15 seconds).
2. Wait for the reboot (the indicators will blink and light up again).
3. Connect to the network. Xiaomi_XXXX and reset from scratch.

⚠️ Warning: After resetting, all settings, including Wi-Fi passwords and QoS rules, will be lost. save important settings in advance (for example, take a picture of the PPPoE screen).

If the router still does not work, check it on another object (for example, friends) - this will help to eliminate problems with the provider.

Frequently Asked Questions (FAQ)