Note: You may have COM ports assigned or 'set aside' for hardware that
may not be installed on your computer depending on how your computer
was setup by its manufacturer.
the COM port mapping pull down menu
The COM port mapping pull down menu allows you to reassign the selected Keyspan COM port
in the COM port list window. This window also reports whether a COM port is 'in use'. In this
menu, 'in use' means that the selected COM port has assigned or reserved. It is highly
recommended that you only change the COM port mapping to COM ports that are not 'in use'.
Note: The COM port mapping pull down menu allows you to change
the COM port mapping to any COM port including those that have
already been assigned (aka in use). Changing the COM port mapping to
a COM port that is in use may render any hardware and/or software
using that port inoperable.
the Adapter Port Mapping Mode box
The Adapter Port Mapping Mode box allows you to change the behavior of how Keyspan COM
port numbers are assigned when you connect the Keyspan adapter to a different USB port than the
one it was originally connected to.
Dynamic assigns a COM port number (or numbers if your Keyspan adapter has multiple serial
ports) to a particular Keyspan adapter. If you disconnect the Keyspan adapter and connect it to a
different USB port, the COM port number of that Keyspan adapter will not change. This is the
default setting and is recommended setting if you only have one Keyspan adapter.
Geographic assigns a COM port number (or numbers if your Keyspan adapter has multiple serial
ports) to a particular USB port on your computer. If you disconnect the Keyspan adapter and
connect it to a different USB port, the COM port number of that Keyspan adapter will change.
This setting is recommended if you are using multiple Keyspan adapters and want the COM port
numbers to remain the same.
(continued on next page...)
Keyspan:USB Serial Adapter for Windows-v3.4 Manual
This User Manual applies to the Keyspan USB Serial Adapter Software for Windows.
Rev 03jul13
Page 15