Campbell Scientific SC-USB USB to CS I/O Optically Isolated Interface - Manual (Page 28)

SC-USB USB to CS I/O Opto-isolated Interface
In most cases the above process will be repeated as Windows
first installs the USB interface controller and then the virtual
serial port driver. Let Windows search for the serial driver in the
same directory as sthe USB driver. NOTE
The installation process will only need to be carried out once.
3.1.5 Uninstalling the SC-USB Drivers
To uninstall the drivers use the standard Windows procedure. Go to the
Windows ‘Control Panel’ and select ‘Add/Remove Programs’. Select
‘CAMPBELL SCIENTIFIC SC-USB Drivers’, click the ‘Add/Remove’ button
and follow the prompts.
3.1.6 Determining which COM Port the SC-USB has been Assigned
The above installation processes relies on parts of the Windows operating
system to assign a com port number to SC-USB. Often this will be the next
port number that is free. However, if other devices have been installed in the
past (some of which may no longer be plugged in), it may be assigned a higher
com port number.
To check which COM port it has got, you can simply monitor the appearance
of a new com port in the list of com ports offered in your software package
(e.g., LoggerNet) before and after the installation, or if there is any doubt, look
in the Windows Device Manager list under the ports section (access via the
control panel).
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