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5.1 – Keyspan Serial Assistant
The Adapter pull down menu is used to select which USB 4-Port Serial Adapter you would like to congure. If you
only have one Keyspan USB 4-Port Serial Adapter, you will not need to change the selecon.
The Power radio buons are used to congure which USB power mode the Keyspan adapter will use.
Use the Low/Compable (normal speed) seng when you are using mulple serial devices at speeds of 115 Kbps or
lower or when only using one port at speeds of 230 Kbps or greater.
Use the High (high speed) seng when you are using mulple serial devices at speeds of 230 Kbps or greater.
The default seng is Low/Compable (normal speed).
Please Note: Using the High Power (high speed) seng requires that your Keyspan adapter be connected to a built-in
USB port on your computer or a self-powered USB Hub.
The Endpoints radio buons are used to congure how the Keyspan adapter will communicate with the USB
subsystem (soware) on your computer. Most users will not need to modify the default seng (High Performance
(BULK)). You should only change this seng if you are sure that your serial device needs a specic seng.
If you have more than one serial port on your Keyspan adapter, the Port pull down menu allows you select which
serial port you want to modify or test. You can also see the serial port’s COM port number and its COM port status
next to the Port pull down menu.
The Test This Port buon tests the selected COM port in the Port pull down menu. The test that is performed is the
selected test in the Test Opon box. The Test All Ports on this Adapter tests all of the COM ports on the selected
adapter in the Adapter pull down menu.
The Test Mode box allows you to specify the type of test that will be preformed when you press the Test This Port
buon.