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5.1 – Keyspan Serial Assistant
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 dierent USB port than the one it was originally connected to.
Dynamic assigns a COM port number (or numbers if your Keyspan adapter has mulple serial ports) to a parcular
Keyspan adapter. If you disconnect the Keyspan adapter and connect it to a dierent USB port, the COM port number
of that Keyspan adapter will not change. This is the default seng and is recommended seng if you only have one
Keyspan adapter.
Geographic assigns a COM port number (or numbers if your Keyspan adapter has mulple serial ports) to a parcular
USB port on your computer. If you disconnect the Keyspan adapter and connect it to a dierent USB port, the COM
port number of that Keyspan adapter will change. This seng is recommended if you are using mulple Keyspan
adapters and want the COM port numbers to remain the same.
The Delete All Keyspan USB 4-Port Serial Adapter Port Mappings buon clears the Windows registry of all Keyspan
USB 4-Port Serial Adapter COM port numbers and Keyspan USB informaon. This allows Windows to create new
COM port assignments.
Note: This is an opon for advanced users only.
Diagnoscs Tab
The Diagnosc tab in the Keyspan Serial Assistant reports diagnosc informaon about your Keyspan adapter’s
soware and hardware this informaon is useful if you are trying to solve problems with Keyspan’s technical support
sta. The following is an explanaon of the items in this tab.