4.3. LED Indicator Lights
There are three LEDs on the USB Serial Adapter. When the
device is installed, the center, green LED will remain blinking
until the installation is complete. If the installation is successful,
the red LED will remain on, indicating power. When the device
is plugged in after installation, the lights will blink one at a time
in sequence from the red LED to the green LED, then back.
When the device has fully initialized and is ready to work, the
red power LED will remain on. During normal usage, the two
green LEDs indicate data being transmitted and received.
4.4. Using the USB Serial Adapter With DOS Applications
To enable the USB Serial Adapter to work with DOS applications,
follow the instructions in section 3.2 Adding DOS Box Support.
You can choose a different name for DOS than what is used for
Windows
®
. You may need to do this if the USB Serial Adapter has
been installed as COM5 or higher, since many DOS applications
will only use COM1-COM4. For instance, if you are adding
DOS Box support to COM7, you can choose to have DOS
applications use the device as COM2 instead, if COM2 is not
already in use. COM7 would still be available for use with
Windows
®
applications, but both COM2 and COM7 refer to
the same physical device.
Therefore, while a DOS application is using COM2, COM7
will be unavailable to Windows
®
applications and vice-versa.
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