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opensense-docs/source/hardware/serial_connectivity.rst

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.. _serial:
====================================
Serial Console connectivity
====================================
The following device families offer a mini-usb connection which can be used for serial communication:
========= ============ =============================
Serie Formfactor Range
========= ============ =============================
DEC6XX Desktop Entry level
DEC7XX Desktop Midrange
DEC8XX Desktop Enterprise
DEC26XX Rack Entry level
DEC27XX Rack Midrange
DEC38XX Rack Enterprise
DEC40XX Rack Enterprise / Datacenter
========= ============ =============================
Supplied with the firewall is a mini-usb to usb cable, use this to connect the to your PC (Windows, Linux, Mac)
next start your terminal program (Putty, screen, etc).
The baudrate should be set to :code:`115200,8N1`, more information about how to use the serial console is available in
our :doc:`serial access guide </manual/how-tos/serial_access>`
.. Note::
The default configured settings in OPNsense for proper serial connectivity in
:menuselection:`System->Settings->Administration` are as followed:
===================== =========================================
setting value
===================== =========================================
Primary Console Serial Console
Secondary Console None
Serial Speed 115200
USB-based serial (unchecked)
Console menu (checked)
===================== =========================================
.. admonition:: Windows Tip
On windows a COM port would be assigned after connecting the unit to usb, to find which one (COM1, COM2, .,) to
use, keep the windows key pressed and hit :code:`R` (Windows+R) and execute the following command :code:`devmgmt.msc`
to open the device manager.
In the device manager all available ports are visible under the "Ports (COM & LPT)" section.
.. _legacy_uart:
**Legacy UART vs. UEFI serial**
=====================================================================================================================
Starting from OPNsense 22.1 (22.4 for the business edition) and the change to FreeBSD 13-STABLE, support for EFI
serial has changed, which requires EFI based systems to disable legacy support to prevent confusing the operating system.
Should you connect your Deciso appliance with a serial line and get limited output / no output from the point of
handover to the OS, it is important your BIOS settings are updated to disable legacy UART.
While in the BIOS, go to Setup Utility --> AMD CBS --> FCH Common Options --> UART Configuration Options --> UART 0 Legacy Options.
and make sure this setting is set to **Disabled**.