PROBLEM
CAUSE
SOLUTION
Link LED on LEX
unit is on, Host
LED on LEX unit
is off.
• The host computer is not
powered on.
• The LEX unit is not connected
to the computer (when used
with the optional LEX AC
adapter).
• T
he computer does not
support USB hubs.
• The USB Ranger® 2201 is
malfunctioning.
1. Disconnect all USB devices from the REX unit.
2. Disconnect the LEX unit from the computer.
3. Disconnect the REX unit from the AC power
adapter.
4. Reconnect the LEX unit to the computer.
5. Reconnect the REX unit to the AC power adapter.
6. In the Universal Serial Bus controllers section of
Device Manager, check that the USB Ranger®
2201 is recognized as a “Generic USB Hub”.
USB Ranger®
2201 units were
working, but the
Host LED on LEX/
REX units are
suddenly blinking.
• The REX unit is in suspend
mode. The operating system
may put the USB Ranger®
2201 in suspend mode when
the computer is put into a
Suspend/Standby state or
when no USB devices are
attached.
1. Recover/Resume the operating system from
Suspend/Standby mode (see your operating
system’s documentation).
2. Attach a USB device to the USB Ranger® 2201.
All LEDs on both
the LEX unit and
REX unit are on,
but the USB device
does not operate
correctly or is
detected as an
“Unknown Device”
in the operating
system.
• The USB device is
malfunctioning.
• The computer does not
recognize the USB device.
• The application software for
the device is not operating.
• The USB Ranger® 2201 is
malfunctioning.
1. Disconnect the USB Ranger® 2201 from the
computer.
2. Connect the USB device directly to the USB port
on the computer.
3. If the device does not operate properly, consult
the user documentation for the device.
4. Update your system BIOS, chipset, or USB Host
controller drivers from your System/Mother-
board manufacturer’s website.
5. If the device operates properly when directly
connected to the computer, connect another
device (of a different type) to the USB Ranger®
2201. Connect the USB Ranger® 2201 to the
computer.
6. If the second device does not operate, the USB
Ranger® 2201 may be malfunctioning. Contact
technical support for assistance.
7. If the second device does operate properly, the
first device may not be compatible with the USB
Ranger® 2201.
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