Owners of the popular Xiaomi Redmi Note 9 Pro often face the need to quickly transfer large amounts of data, whether it is high-resolution photos, 4K videos or app backups. Standard cloud storage is not always convenient due to Internet connection speed limits or free space limits. It is at such moments that the question arises as to how to connect the Xiaomi Redmi Note 9 Pro to the computer as quickly as possible and without unnecessary dancing with a diamond.
Modern Android smartphones offer several protocols for interacting with external devices, but not all of them are activated by default. USB-The port allows you not only to copy files, but also to use the phone as a modem, webcam or debugging tool for developers. In this article, we will discuss in detail all available methods of synchronization.
To start the work, you will need a proper USB-cable, preferably an original or manufacturer-certified accessory that can transmit data, not just charge. Also make sure that your personal computer or laptop has basic drivers installed to work with the device. USB-devices, although in modern operating systems Windows 10 and Windows 11 they are often loaded automatically.
Physical connection and choice of USB mode
The first and most obvious step is to physically connect the devices, so insert one end of the cable into the smartphone port and the other end into the smartphone port. USB-At that point, the phone starts charging, which indicates power, but it's not enough to transmit data.
After connecting, lower the notification curtain on the smartphone screen. You will see the system notification “Charge through” USB» or «USB-Click on this line to open the mode selection menu, and here is a key setting that determines how the Android operating system will interact with the PC.
There are several options available in the list that opens, each with a different purpose: For normal file management, you will need an MTP (Media Transfer Protocol) mode, which allows your computer to see the phone's internal memory and microSD card as external drives.
- 📱 Charging only – safe mode, in which data transfer is blocked, only recharging of the battery is available.
- 💾 File transfer (MTP) — The main mode for copying documents, music, photos and videos between devices.
- 📷 Transmission of photo (PTP) — A mode emulating a digital camera is useful for older PCs or specialized software.
- 🎧 Audio transmission (MIDI) — Used to connect musical instruments or configure audio interfaces.
⚠️ Warning: If the cable is wobbling in the connector when connecting or the computer makes a sound of the device turning off, try replacing it. USB-Cheap cables often don't have internal data lines (Data)+ and Data-, providing only charging.
When you select File Transfer mode, a new device should appear on your computer screen in My Computer or This Computer. If that doesn't happen, a window may have appeared on your smartphone screen asking for permission to debug or access data, which you need to confirm.
Configuring drivers and solving display problems
Sometimes the Windows operating system cannot automatically identify the Xiaomi Redmi Note 9 Pro by displaying it as "Unknown Device" in Task Manager.This is a classic situation requiring manual installation or driver updates. Without the right driver, data exchange between the phone's chipset and the PC motherboard is impossible.
To solve the problem, open Device Manager on your computer. Find a device with a yellow exclamation mark or Portable Devices section in the list. Right-click and select Update Driver, then Auto Search. If the system finds nothing, you will need manual installation.
The official driver can be found as part of the Mi PC Suite program (although support is discontinued, drivers are working) or download the universal Google USB Driver through the SDK manager Android Studio. Also, installing Qualcomm drivers often helps, since the Snapdragon 720G processor installed in the Redmi Note 9 Pro is based on this architecture.
It is important to make sure that the PC version of the operating system is up to date. Older Windows 7 builds may not have the built-in MTP protocols needed to work properly today’s smartphones, in which case installing system updates often solves the problem without looking for specific drivers.
Using wireless technologies for synchronization
If you don’t have a cable or a USB connector is damaged, you can use wireless data transfer methods. Modern technologies allow you to transfer files at high speed over a local Wi-Fi network, which is especially true for the Xiaomi Redmi Note 9 Pro with its support for dual-band networks.
One of the most convenient ways is to use the built-in "Sharing with environment" (formerly Mi Drop) or third-party conductor applications, such as WiFi File Transfer. The principle of operation is simple: the phone and the computer must be connected to the same Wi-Fi network. IP-Address to be entered in the browser on the PC.
This method is convenient because it does not require the installation of drivers and allows you to work with the file system of the phone through the usual web interface or Windows Explorer. The transfer speed depends on the router, but at a frequency of 5 GHz it can reach tens of megabytes per second.
| Connection method | Transmission speed | Stability | Need for PO |
|---|---|---|---|
| USB Cable (MTP) | High (up to 480 Mbps) | Maximum | Not required |
| Wi-Fi (Local Area Network) | Medium (depending on router) | Good. | Conductor application |
| Bluetooth | Low (up to 3 Mbit/) | Medium | Not required |
| Cloud services | Depends on the Internet. | Depends on the server. | browser or client |
⚠️ Note: When transferring large amounts of data (more than one) 20-30 GB) wirelessly ensure that the smartphone does not go to sleep. Adjust the screen to "Do not turn off" during transmission, otherwise the connection may break.
USB Debugging Mode for Advanced Users
For those who plan to not just copy files, but control their phone from a computer, make full backups or install custom firmware, USB debugging mode is required. This feature is hidden in the developer menu and gives deep access to the Android system.
To activate this feature, go to Settings → About Phone and quickly click on the MIUI version seven times. A notification will appear “You became a developer.” After that, the “Additional” or “Extended Settings” menu will appear “Developers” option.
Inside this menu, find the USB Debugging Switch and activate it. When you first connect to a new computer, a request will appear on your smartphone screen to confirm debugging with a unique RSA key. Be sure to click "Allow" or the computer will not get access.
Why do we need ADB?
Using debugging requires you to install the Platform Tools on your computer, a set of Google utilities that lets you execute commands on the console, for example, the adb device command will show you a list of connected devices, and the adb pull will copy the file from your phone to your PC.
Transfer of Internet connection via USB (USB Tethering)
Connection functionality of Xiaomi Redmi Note 9 Pro to the computer is not limited to files. The smartphone can act as an external modem, giving the computer access to the Internet through a mobile network. 4G/LTE. This is especially true for laptops without SIM-maps or places where Wi-Fi is unstable.
To activate the mode, go to Settings → Connection and sharing → USB-modem. Make sure your phone has Wi-Fi turned off and mobile data on before you turn on. Connect your phone with a cable to your PC and activate the switchboard.
The computer recognizes the phone as a new network connection (Ethernet), and the speed of the Internet will depend on the quality of the cellular signal and standards (3G, 4G), which is a more stable and energy-efficient way of distributing the Internet than Wi-Fi hotspot.
- 🚀 Stability – cable connection is less prone to interference than wireless.
- 🔋 Energy savings – the phone is charged from the PC during the distribution of the Internet.
- 🔒 Security – data is transmitted over a physical channel, it is more difficult to intercept.
⚠️ Warning: Make sure your mobile plan allows Internet distribution.Some carriers block this mode or charge traffic separately if they see it being used on a PC (determined by the following: TTL).
Frequent problems and ways to fix them
Despite the simplicity of the procedure, users may face a number of technical difficulties, the most common problem is that the computer sees the phone only as a charger, and 90% of the time, this is solved by replacing the cable with a quality analogue that supports data transfer.
Another common situation is the appearance of many unknown devices in the task manager after connection, which may indicate a driver conflict, in which case it is recommended to completely remove the device from the controller, turn off the cable, restart the PC and try again.
☑️ Diagnostics of connection problem
If nothing helps, try connecting your phone to another. USB-port, preferably located on the back of the system unit (direct to the motherboard), since the ports of the front panel may not provide sufficient voltage.
FAQ: Frequently Asked Questions
Why can’t the Redmi Note 9 Pro be seen when it’s charging?
How to speed up copying files from phone to PC?
Is it safe to leave USB debugging on all the time?
Can you control your phone screen from a computer without third-party software?
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The key to a successful connection is a quality cable and the right MTP mode in notifications, and most problems are solved by changing the wire or restarting the devices.
To sum up, connecting the Xiaomi Redmi Note 9 Pro to your computer is a straightforward process, but requires attention to detail. Knowing the nuances of the drivers and USB modes will allow you to avoid typical errors and make the most of the capabilities of your smartphone.