Open (Windows) or System Information > USB (Mac).
This is a fake/clone chip issue. FTDI's newer drivers (v2.12.28+) intentionally misbehave with counterfeit chips. They will set the PID to 0x0000 or ignore the device.
After installing the driver via the official , confirm functionality: ft231x usb uart driver link
Linux users are in luck – the kernel includes the ftdi_sio driver. In 99% of cases, it works out of the box.
: Download the Dext or VCP installer depending on your macOS version (supports macOS 11, 12, 15, and 26). Open (Windows) or System Information > USB (Mac)
The FT231X USB UART chip remains a benchmark for reliability in serial communication. Keeping your system updated with the official VCP drivers ensures stable data transfers, low latency, and broad compatibility with terminal applications. Use the links provided above to safely acquire your files and get your project back online quickly.
You can install both VCP and D2XX – they coexist. The D2XX driver is included in the same CDM installer package (Windows) or as a separate download for macOS/Linux. They will set the PID to 0x0000 or ignore the device
This indicates the device is recognized, but no software driver is bound to it.
If you need help resolving a specific error or deploying this driver in a specialized environment, please share:
: Used for custom applications that require direct access to the via a DLL interface Key Features of the Integrated Protocol Handling