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REDMI NOTE 9 PRO CHARGING Board
A detailed description of the Redmi Note 9 Pro Charging Board (also known as the Sub-Board or Charging Flex PCB) is provided below in a tabular format.
Product Overview: Redmi Note 9 Pro Charging Board
| Attribute | Description |
| Product Name | Redmi Note 9 Pro Charging Board / Sub-Board Replacement |
| Compatible Models | Xiaomi Redmi Note 9 Pro, Redmi Note 9S, Poco M2 Pro (Global & India versions) |
| Part Type | Internal Hardware Replacement Part |
| Main Function | Manages battery charging, data synchronization, microphone input, and speaker connectivity. |
| Port Type | USB Type-C 2.0 |
| Key Components | USB-C port, Integrated Microphone, Antenna Signal Connector, Main Flex Cable Connector, and Loudspeaker Contact Pins. |
| Material | High-density Glass-reinforced Epoxy (FR-4) PCB with Copper Traces. |
| Dimensions | Approx. 4.5 cm x 3.0 cm (Standardized for M2003J6A1I / M2003J6B2G models) |
| Weight | ~5 to 10 grams |
Detailed Technical Specifications
| Feature | Technical Details |
| Charging Support | Supports Fast Charging (up to 33W Pro charging depending on board quality). |
| Data Transmission | High-speed data sync via USB-C to PC/Laptop. |
| Audio Components | Includes the primary "bottom" microphone for voice calls and voice recording. |
| Connectivity | Features gold-plated pins for reliable connection to the Loudspeaker/Ringer module. |
| Signal Integrity | Includes a coaxial cable socket for cellular and Wi-Fi antenna signals. |
| Safety Features | Overcurrent protection (on OEM/Original versions) to prevent motherboard shorts. |
| IC Components | Contains the power management IC (PMIC) logic specifically for the sub-board distribution. |
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| Weight |
0.007 |
|---|
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