Introduction: Why it is important to know the type of charging connector
Have you bought a new Xiaomi smartphone or are planning to buy one, but are not sure what cable you will need to charge? Or the old charging wire stopped working and the store offers dozens of options with different connectors? This problem is familiar to many users - the Xiaomi brand has used three main types of connectors over the past 10 years, and choosing the wrong cable can lead to slow charging, port damage or even device failure.
In this article, we will not only list the types of connectors, but also explain how to determine the connector of your model even without a box, what features of fast charging depend on the type of connector, and why some USB-C cables charge 2 times slower than the original.
Evolution of charging connectors in Xiaomi smartphones: from Micro-USB to USB-C
Xiaomi followed the global trends in connector selection, but with some nuances.
- 📱 2011–2016 All budget and flagship models (including Mi) 2/3/4/5, Redmi 1/2/3) It was the standard for Android devices, but it had the disadvantages of fragility, slow data transfer and limited charging power (up to the top). 10 Watt).
- ⚡ 2016–2019 Transitional period. Flagships (Mi) 6, Mi Mix 2) received USB Type-C and Budget Series (Redmi) 5/6/7) It was a year or two before the Micro-USB was released, and that was confusing, like the Redmi Note. 5 (2018) It had a micro USB and a Mi. 8 same year, already USB-C.
- 🔌 S 2020 year-to-year transition USB-C. All new models, including the Redmi 9, POCO X3 and Mi flagships 10/11/12/13/14, They're only available with this connector, except for some devices in Africa and India, like the Redmi. A1 2022 The year is still complete with Micro-USB).
Interesting fact: Xiaomi was one of the last major companies to abandon Micro-USB. For example, Samsung switched to USB-C in flagships as early as 2015 (Galaxy S6), and Apple used its own Lightning since 2012.
How to determine the type of charging connector in your Xiaomi model
If you don’t have the original box or documentation, here are 4 reliable ways to find out the type of connector:
- External port inspection: 🔍 Micro-USB: small trapezoidal connector (width) ~7 mm), asymmetric (inserted only by one side) often has a white or black plastic case. ⚡ USB-C: oval connector (width) ~8.5 mm), symmetrical (inserted by either side) metal body, often with gold or silver coating.
Check the model on the official website:
Go to mi.com, find your model in the Support → Product Specifications section, and the specifications will indicate the type of connector (e.g. USB Type-C or Micro-USB).
Mi Check
Download the official Mi Check app from Google Play. The Device Info section will show you the type of connector and the charging protocols supported.
Serial number analysis:
On the box or in settings (Settings → About Phone → Model), find the model code (e.g., M2007J3SC for Redmi Note 9 Pro). The first letters/digits often indicate the year of release and series, which helps determine the connector.
☑️ Checklist for connector determination
⚠️ Note: Some retailers on marketplaces (such as AliExpress or Wildberries) indicate the wrong type of connector in the description. Always check the information with official sources or photos of the real device.
Table: charging connectors according to Xiaomi models (2015–2026)
Here's a summary table of popular models and their connectors. If your model isn't on the list, use the methods in the previous section.
| Model | Year of release | Type of connector | Max. Charging power. | Notes |
|---|---|---|---|---|
| Redmi 4/4A/4X | 2016–2017 | Micro-USB | 5-10 W. | Budget models with slow charging |
| Mi 6 | 2017 | USB-C | 18 W. | The first flagship with USB-C, but without fast charging included |
| Redmi Note 7/7 Pro | 2019 | USB-C | 18 W. | Transition to USB-C in the middle segment |
| POCO F1 | 2018 | USB-C | 18 watts (Quick Charge 3.0) | Qualcomm Quick Charge Support |
| Mi 11 Ultra | 2021 | USB-C | 67 W. | Superfast charging, compatible with GaN charging |
| Redmi A1/A2 | 2022–2023 | Micro-USB | 10 Watts. | Exclusion for Budget Markets |
💡 If your model is released after 2020 and is not included in the Redmi A series, there is a 99% probability that it has a connector. USB-C. For accurate verification, use the GSMArena database - the type of connector is indicated in the characteristics of any model.
Connector compatibility: can adapters and adapters be used?
Many users of older Xiaomi models with Micro-USB are wondering: can you connect modern accessories (for example, headphones or external drives) through USB-C?
- ✅ Micro-USB adapters → USB-C: There are adapters that allow you to connect USB-C-cables to the Micro-USB port, however, they do not support fast charging (max. 10 W) and can overheat with prolonged use.
- ❌ Reverse adapters USB-C → Micro-USB: These adapters are technically possible, but not recommended – they often cause connection errors and can damage the port due to protocol mismatch.
⚠️ Note: Using cheap adapters with AliExpress or Wish can cause the cable to fire or the power controller of the smartphone to fail. USB-IF (logo on the package) and reviews of a particular model.
What happens if you use an uncertified cable?
Fast charging and connectors: how the type of port affects speed
The type of connector is directly related to the fast charging protocols supported, and here are the key differences:
- 🐢 Micro-USB: Maximum power is 10-15 W (standard) USB Even if the power supply supports Quick Charge 2.0, the cable will become a bottleneck. For example, the Redmi Note 4 with Micro-USB charges from 0 to 100% in 2.5-3 hours.
🔋 Important: Even if your smartphone supports fast charging, cheap cable USB-C The original Xiaomi cables have an integrated E-Marker chip that “negotiates” with the phone about the maximum power.
💡
A USB-C cable without an E-Marker chip limits charging to 15 watts, even if the power supply supports 67 watts.
Frequent problems with charging connectors and how to avoid them
Charging ports are one of the most vulnerable places smartphones have.-5 Problems and ways to prevent them:
- Dissolved connector: More common in Micro-USB because of the fragile design. Solution: avoid sudden movements when connecting the cable, use magnetic adapters (for example, MagSafe analogues for USB-C).
- Contact oxidation: This is manifested as slow charging or intermittent connection. Clean the port with an alcohol tampon (not a cotton swab!) or compressed air. Don't use metal objects - they scratch the contacts.
- Overheated connector: If the port is hot when charging, check the cable and power supply. The reason may be high current (for example, 67 watts on the Redmi Note 12 Pro+) or damaged cable insulation.
- Incompatibility with wireless headphones: Some models (like Redmi AirDots) require USB-C to connect to a smartphone. If you have a Micro-USB, use Bluetooth or an OTG adapter.
- Charging suspended error: Occurs when using uncertified cables. Solution: reboot your phone or try another cable. If the problem persists, check the port for physical damage.
⚠️ Note: If after cleaning the port charging is not restored, do not try to solder the connector yourself - in 80% of cases this leads to damage to the motherboard).