It’s crucial to know that the RM-908 is from newer 105 models.
For , only three pins are necessary:
Below is the technical mapping required to build a functional USB interface: Motherboard Test Point USB Wire Color Function Description +5V Power Supply from USB DM (Data Minus) / RX Data Receive / Negative Data Line DP (Data Plus) / TX Data Transmit / Positive Data Line GND (Ground) Electrical Ground Important Hardware Note
Technicians use these pinouts to resolve specific device issues: Nokia 105 Rm 908 Usb Pinout
Finding the correct USB pinout for the Nokia 105 RM-908 is essential if you are trying to connect the phone to a computer for flashing or repair because this model does not have a standard USB charging port.
| USB Wire Color | Function | Connection Point on Nokia 105 RM-908 | | :--- | :--- | :--- | | | VBUS (+5V) | Connect to the VBAT (Battery Positive) terminal or the +5V input at the charging connector. | | Black | GND (Ground) | Connect to the GND (Battery Negative) terminal or any metal shielding. | | Green | D+ (Data Plus) | Connect to the USB D+ test point on the PCB. | | White | D- (Data Minus) | Connect to the USB D- test point on the PCB. |
What are you trying to fix? (e.g., forgotten password, dead boot, broken charging port) Which flashing tool or software box are you using? It’s crucial to know that the RM-908 is
If you short the wrong pins or apply too much heat, you can permanently damage the phone. Proceed at your own risk.
For technicians performing hardware repairs or flashing firmware (often using tools like Infinity BEST), the following connection points are used: Vcc (5V+):
Because the Nokia 105 does not support native USB data transfer through its external micro-USB port (which is wired for charging only), you must connect directly to the motherboard's test points. This guide provides the exact USB pinout connection diagram and hardware repair steps for the RM-908. Understanding the Nokia 105 (RM-908) Motherboard Layout | | Black | GND (Ground) | Connect
The common return path for the electrical circuit.
The uses a standard Micro-USB pinout with Pin1 = VBUS, Pin5 = GND, Pin2/3 = D+/D- . Data lines are physically connected to the main processor but are not enabled for user data transfer in the stock firmware. The USB interface is fully functional for service flashing and charging only.