The device will appear as /dev/ttyUSB0 or /dev/ttyACM0 . Add your user to the dialout group to use without sudo :
Unlike generic USB devices, the FT231X is not always natively supported on older Windows versions or some Linux distros without additional packages. The driver acts as a translator, creating a virtual COM port (VCP) that allows your software (e.g., Arduino IDE, PuTTY, CuteCOM) to send and receive data.
Switch from a USB 3.0 port to a USB 2.0 port. Avoid using unpowered USB hubs. Swap out the USB cable for one that explicitly supports high-speed data transfer. Issue 2: Yellow Exclamation Mark in Device Manager Cause: The driver is missing or corrupted. ft231x usb uart driver link
When standard uninstalls fail, FTDI provides dedicated tools to completely clean your system. This is a critical step for fixing corrupted installations.
, then follow the wizard prompts to accept the license agreement. Connect device to a USB port. The device will appear as /dev/ttyUSB0 or /dev/ttyACM0
Plug your FT231X device into a USB port. Windows Update will search for and install the driver automatically. Manual Setup Executable: Go to the VCP Drivers page linked above.
: 2048-byte EEPROM for storing device descriptors and CBUS configurations, programmable over USB using the FT_PROG Utility Comparison: FT231X vs. FT232R is the older industry standard, the Switch from a USB 3
is a popular USB-to-UART interface chip from FTDI, known for its small footprint and "full handshake" capabilities. It is widely used to bridge USB ports with microcontroller UART interfaces, enabling easy serial communication without requiring the developer to write complex USB protocol firmware. Official Driver Links
Your operating system account lacks group access privileges to read and write to the serial hardware communication lines.