Once installed, verify that the chip is communicating properly:
Key Hardware Features * Single chip USB to asynchronous serial data transfer interface. * Entire USB protocol handled on the chip. UMFT231XC USB to UART with Battery Charger Support - FTDI 2 Sept 2012 —
The FT231X is part of the FT-X series, designed to replace UART devices with USB connectivity. Key features include: Full USB-to-UART conversion. Data rates up to 3 MBaud.
While Linux handles the driver automatically, your user account might not have permission to access the serial port ( /dev/ttyUSB0 ). You can fix this by adding your user to the dialout group with the following command: sudo usermod -a -G dialout $USER Use code with caution. Log out and log back in for the changes to take effect. Verifying Your Installation
For most modern Linux distributions, FT231X drivers are built directly into the kernel. This means your device should be recognized automatically without any extra steps. The kernel version must be to ensure full compatibility. If it isn't automatically detected, the device can be accessed via a userspace library such as libftdi or pyftdi . ft231x usb uart driver link
🔗 https://ftdichip.com/drivers/vcp.htm
Your (e.g., Windows 11, macOS Sonoma) The exact error message or behavior you are seeing
The is a popular USB to UART (Universal Asynchronous Receiver/Transmitter) interface IC. It requires a device driver to function correctly on Windows, macOS, and Linux. Below are the official, safe, and up-to-date driver links and installation instructions.
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What you are connecting.
If you have multiple USB-to-serial devices, the COM port number might clash. Right-click the COM port in Device Manager, choose Properties > Port Settings > Advanced, and change the COM Port Number.
This error can sometimes be caused by your computer's USB controllers. Here is a common fix:
🔗 https://ftdichip.com/drivers/
Connect your FT231X device. Look for an entry with a yellow exclamation mark labeled or "Unknown Device" under Other Devices . Right-click the item and select Update Driver . Choose Browse my computer for drivers .
Download the from the FTDI VCP Drivers page .
Modern macOS versions natively include built-in driver architecture support (AppleUSBFTDI) for standard FTDI devices.