The FT232R USB UART driver is essential for establishing a serial console connection between a computer and Fortinet hardware, such as FortiGate firewalls or FortiAP access points. While Fortinet often includes a branded USB-to-RJ45 console cable with their high-end devices, they do not provide an "exclusive" or official proprietary driver for this hardware. Instead, these cables rely on standard FTDI (Future Technology Devices International) chipsets. Core Functionality and Requirements
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- Reboot → Disable Secure Boot (UEFI) temporarily.
- Or use FTDI CDM v2.12.36 WHQL signed version (not beta).
The FT232R USB UART driver facilitates serial console connections for Fortinet devices, utilizing standard FTDI chips rather than a proprietary, exclusive driver. While Fortinet brands the console cables, the required drivers are standard Virtual COM Port (VCP) drivers, often requiring manual installation for Windows to recognize the "Unknown Device". For more details, visit Fortinet Community. Solved: USB Console - Fortinet Community
flock()orTIOCEXCLioctl on the TTY device.- Kernel-level claim by Fortinet daemons (e.g.,
fg_serd).
8. Conclusion
The FT232R USB-UART driver on Fortinet platforms is present but exclusively constrained by:
Further Resources
- FTDI Application Note AN_220: “Using FTDI Devices in Exclusive Mode”
- Fortinet KB: “Console Connection Failure with USB-to-Serial Adapters” (Article ID: FD40486)
- FT_Prog Utility (Version 3.12.14 or later) – for reprogramming FT232R EEPROM to Fortinet-compatible settings.
- Assign a static COM port in Device Manager → Port Settings → Advanced.
Use a terminal emulator like PuTTY or Tera Term with these standard Fortinet settings: Ultimate FT232R USB UART Driver Download and Install Guide