Keyspan 1.9 - Manual (Page 14)

The Use Naming '.Cin .Din check box allows use of an alternative port naming conventions. This
option is provided for compatibility with certain applications which adopted this naming convention.
Please contact the manufacturer of your serial to see if you require this setting to be enabled. The
default state is unchecked. A change in this setting will take effect upon restart of your computer or
until you disconnect and reconnect the adapter.
The Use INTERRUPT endpoints check box is used to change how the Keyspan adapter
communicates with your computer's USB bus. When this option is turned on, the Keyspan adapter
will use the INTERRUPT endpoints to communicate with your computer's USB bus. When this
option is turned off, the Keyspan adapter will use the BULK method of communicating with your
computer's USB bus.
The Port popup menu allows you to select the Keyspan serial port that you want to configure.
Please note that each port maintains its own separate settings. As a result you must configure each
port individually.
The Port Name text box allows you to change the name of the selected port. Changes will take
effect upon reboot. Please note that you cannot change the port name on ports that use the Emulate
Modem/Printer Port check box.
The Reset & Close button can be used to recover use of a serial port that is open and and cannot
be closed by the application that opened it. When you click on this button, Keyspan Manager will
send calls to the port which should reset the port and close it. This will not prove effective in every
circumstance.
The Receive FIFO popup menu allows you to configure the number of characters which are stored
in the card's "First In First Out" input buffer ("FIFO") before they are made available to the
computer. The default value of this parameter is "16". The Receive FIFO improves the reliability
of data transfer at high speeds. You can turn this option OFF for performance reasons however
this is not necessary in most cases.
Keyspan:High Speed USB Serial Adapter for Mac OS-v1.9 User Manual
This User Manual applies to the Keyspan High Speed USB Serial Adapter Software for Mac OS.
(rev 02may12JA)
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