Keyspan 1.9 installation instructions LED Behavior

Keyspan:High Speed USB Serial Adapter for Mac OS-v1.9 User Manual

7.1.e - LED Behavior

The Keyspan High Speed USB Serial Adapter part number USA-19QWcomes equipped with a green LED light that reports the status of the Keyspan adapter USB hardware and serial port.

The following table shows all of the possible states of these LED light and what they mean:

Color	State	Significance
Green	Off	The Keyspan adapter is not connected or
		not receiving power from your computer
Green	On-Blinking Slowly	The Keyspan adapter software and
		hardware are working properly. The
		Keyspan serial port is available for use.
Green	On-Steady Light	The Keyspan serial port is 'in use' by an
		application on your computer and is
		ready to send and receive data to and from
		your serial device.
Green	On-Blinking Rapidly	The Keyspan serial port is sending and/or
		receiving data

Please note that the LED light is only available on the Keyspan High Speed USB Serial Adapter part number USA-19QW. It is not available on other part numbers.

This User Manual applies to the Keyspan High Speed USB Serial Adapter Software for Mac OS.

(rev 02may12JA)

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