: Run the setup.exe or install.exe from your downloaded folder. If prompted by Windows Security regarding unsigned drivers, select "Install this driver software anyway" . Verify COM Port : Open Device Manager (right-click Start menu). Expand Ports (COM & LPT) .
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The JXMCU USB-C09FX is a microcontroller unit (MCU) designed by JXMCU, a renowned Chinese microelectronics company. This MCU is built around the USB protocol, allowing it to communicate with computers and other devices via a USB connection. The USB-C09FX is widely used in various applications, such as:
Double-click the icon (the first block on the left). jxmcu usbsc09fx driver download full
⚠️ Do not use "Driver Booster" or "Driver Easy" – they often inject old, vulnerable drivers.
Once you have downloaded the appropriate driver package for your Windows operating system (Windows 10 and 11 are fully supported), follow these installation procedures. Installing the Driver Extract the downloaded .zip folder if applicable.
To make the cable work, you must download the driver that corresponds to the internal chip inside your JXMCU hardware. Step 1: Identify Your Chipset : Run the setup
and point it to the folder where you extracted your downloaded driver. Confirm the COM Port:
You should now see or Prolific USB-to-Serial Comm Port (COMx) without any yellow warning flags.
Yes, but only for serial wire debug (SWD). Full JTAG requires an additional adapter like J-Link. The USBSC09FX provides the virtual COM port needed for ST-Link utilities. Expand Ports (COM & LPT)
Manufactured by WCH, this is the most common chip found in JXMCU cables.
: The COM port assignment might have changed. If you plug the JXMCU adapter into a different USB port on your PC, Windows may assign it a completely new COM port number. Check Device Manager to verify.
Plug the USB end of your JXMCU USBSC09FX cable into a USB 2.0 or USB 3.0 port on your PC.
Last updated: October 2024 – Verified against Windows 11 build 22621 and latest CH340 driver v3.8.2023.
Double-click your current connection target (e.g., Connection1). Double-click the item. Select RS-232C and choose your corresponding COM Port . Click Connection Test to verify. Troubleshooting Common Errors
