User guide

Installing and Activating the AirLink GX440
Rev 1.0 Jan.12 31
USB OTG Port
Figure 3-7: USB Micro-A connector cable
The CPU OTG port operates in device mode; when the port is unused, the AirLink
GX440 operates in device mode. If a Micro-B plug is inserted into the port, AirLink
GX440 operates as a self-powered device and will not draw any current from the
USB. If a Micro-A plug is inserted, the AirLink GX440 operates in host mode and
supplies power to the device that is plugged into. At this time, however, USB host
capability is a future ALEOS enhancement.
Your AirLink GX440’s high-speed (480 Mbps) USB 2.0 port can be directly
connected to computers or other devices using a standard USB 2.0 cable. If the
computer or device you are connecting or the cable is not rated for high-speed,
the device will communicate at a reduced speed to match.
When it is connected to a computer in device mode, the USB port should be seen
as a COM port or Ethernet port after the applicable driver is installed and
configuration has been enabled. The port is, by default, a virtual Ethernet port.
LED Operation
Four LEDs are visible from the front and top of the AirLink GX440. Labeled (left
to right) Network, Signal, Activity, and Power, each LED can display one of three
colors: green, yellow, or red.
LED operation is as follows:
• Off - No activity
• Green - Full function
• Yellow - Limited function
• Red - Not functional.
Caution: If you need to reset the device configuration using the Reset
button, depress and hold the button until the LEDs start cycling yellow,
and then the button may be released.