1. Introduction
Thank you for choosing the Xiaomi Mi Box S (2nd Gen) 4K UHD Media Player. This device transforms your television into a smart entertainment hub, offering access to a wide range of streaming services, apps, and games. Featuring 4K Ultra HD resolution, Dolby Vision, HDR10+, Dolby Atmos, and DTS-HD audio, it delivers an immersive viewing and listening experience. This manual provides essential information for setting up, operating, and maintaining your device.
2. Safety Information
- Read all instructions carefully before use.
- Do not expose the device to rain, moisture, or extreme temperatures.
- Ensure proper ventilation around the device to prevent overheating.
- Use only the provided power adapter.
- Keep the device away from direct sunlight and heat sources.
- Do not attempt to disassemble or repair the device yourself. Contact qualified service personnel.
3. Package Contents
Verify that all items are present in your package:
- Xiaomi Mi Box S (2nd Gen) Media Player
- Remote Control
- Power Adapter
- HDMI Cable
- User Manual (this document)
4. Product Overview
Device Front/Top View

Figure 1: Top view of the Xiaomi Mi Box S (2nd Gen) media player.
Device Rear View (Ports)

Figure 2: Rear view of the Xiaomi Mi Box S (2nd Gen) showing connectivity ports.
- Audio Output: For connecting to external audio systems.
- HDMI Port: Connects to your TV or display.
- USB Port: For connecting external storage devices or accessories.
- Power Input: Connects to the power adapter.
Remote Control

Figure 3: Xiaomi Mi Box S (2nd Gen) remote control.
- Power Button: Turns the device on/off.
- Google Assistant Button: Activates voice control.
- Navigation Ring: For menu navigation.
- Back Button: Returns to the previous screen.
- Home Button: Returns to the home screen.
- Volume Buttons: Adjusts volume.
- Dedicated App Buttons: Quick access to Netflix, Prime Video, YouTube, and other apps.
5. Setup
5.1 Connecting to Your TV
- Connect one end of the HDMI cable to the HDMI port on your Mi Box S.
- Connect the other end of the HDMI cable to an available HDMI input on your TV. Note the HDMI input number (e.g., HDMI 1, HDMI 2).
5.2 Powering On
- Connect the power adapter to the power input port on your Mi Box S.
- Plug the power adapter into a wall outlet.
- Turn on your TV and select the correct HDMI input source using your TV remote.
- The Mi Box S should power on automatically. If not, press the power button on the Mi Box S remote.
5.3 Remote Pairing
If your remote is not paired automatically:
- Ensure the remote has fresh batteries.
- Hold the remote close to the Mi Box S.
- Press and hold the Home and Back buttons simultaneously until you see a pairing confirmation on your TV screen.
5.4 Initial Setup Wizard
Follow the on-screen instructions to complete the initial setup:
- Language Selection: Choose your preferred language.
- Network Setup: Connect to your Wi-Fi network. Enter your Wi-Fi password when prompted. The device supports dual-band (2.4GHz and 5GHz) Wi-Fi.
- Google Account Login: Sign in with your Google account to access Google Play Store, Google Assistant, and other Google services.
- Terms of Service: Accept the terms and conditions.
- Google Assistant Setup: Configure Google Assistant for voice commands.

Figure 4: Xiaomi Mi Box S (2nd Gen) connected and displaying Google TV interface.
6. Operating Instructions
6.1 Navigating Google TV
- Use the Navigation Ring on the remote to move through menus and select items.
- Press the Home button to return to the main Google TV interface at any time.
- Press the Back button to go back one step in the menu or exit an app.
6.2 Using Google Assistant
Press the Google Assistant button on your remote and speak into the remote's microphone. You can ask it to:
- Search for movies or TV shows.
- Open applications.
- Control smart home devices.
- Get weather updates or ask general questions.
6.3 Chromecast Built-in
The Mi Box S has Chromecast built-in, allowing you to cast content from your compatible smartphone, tablet, or computer directly to your TV. Look for the Cast icon (
) within supported apps.
6.4 Installing Applications
Access the Google Play Store from the Google TV home screen to download and install a wide variety of streaming apps, games, and utilities.
7. Maintenance
7.1 Cleaning
Wipe the device and remote with a soft, dry cloth. Do not use liquid cleaners or abrasive materials.
7.2 Software Updates
The Mi Box S will periodically check for and download software updates automatically. Ensure your device is connected to the internet for these updates. You can manually check for updates in the Settings menu.
8. Troubleshooting
| Problem | Possible Solution |
|---|---|
| No power/Device not turning on | Check power adapter connection. Ensure the power outlet is working. Try a different outlet. |
| No picture on TV | Ensure HDMI cable is securely connected. Select the correct HDMI input on your TV. Try a different HDMI port or cable. |
| Remote not responding | Replace remote batteries. Re-pair the remote (see Section 5.3). Ensure no obstructions between remote and device. |
| Wi-Fi connection issues | Restart your router and the Mi Box S. Re-enter Wi-Fi password. Ensure the device is within range of your Wi-Fi router. |
| Apps crashing or freezing | Restart the app. Clear the app's cache (Settings > Apps > [App Name] > Clear Cache). Restart the Mi Box S. |
| Poor 4K or HDR quality | Ensure your TV supports 4K and HDR. Check your HDMI cable (use a high-speed HDMI cable). Verify content source is 4K/HDR. Check TV settings for HDMI input mode. |
9. Specifications
| Feature | Detail |
|---|---|
| Model Name | MDZ-28-AA |
| Manufacturer | Xiaomi |
| Product Dimensions | 9.52 x 9.52 x 1.67 cm; 142 grams |
| Color | Black |
| Resolution | 4K Ultra HD |
| Connectivity Technology | Ethernet, Bluetooth, Wireless (Dual-Band Wi-Fi) |
| Connector Type | Micro USB, HDMI |
| Special Feature | Chromecast Built-in |
| Supported Internet Services | Netflix, YouTube, and more via Google Play Store |
| Controller Type | Voice Control, Remote Control |
| Audio Technologies | Dolby Atmos, DTS-HD |
| Video Technologies | Dolby Vision, HDR10+ |
10. Warranty and Support
For warranty information, please refer to the warranty card included with your product or visit the official Xiaomi website. For technical support, troubleshooting assistance, or service inquiries, please contact Xiaomi customer support through their official channels.
You can find more information and support resources on the official Xiaomi website: www.mi.com/global/service/support/