: If the device connects and immediately disconnects, it may be because feature phones often only enter "Flash Mode" for a few seconds when powered on while holding a specific "Boot Key". Update drivers through Device Manager in Windows

Without the specific SC6531E USB driver, your Windows PC will likely identify the connected device as "Unknown" or "USB Serial Port" with an error. The driver allows the PC to:

Common VID/PID for SC6531E:

: Ensure you are using a high-quality Micro USB data cable ; some cables are only for charging and lack data lines.