
PROBLEM CAUSE SOLUTION
Link LED on local
extender is on,
Host LED on local
extender unit is off.
•Thehostcomputerisnot
powered on.
•Thelocalextenderisnot
connected to the computer
(when used with the optional
local extender AC adapter).
•Thecomputerdoesnot
support USB hubs.
•TheRG2204ismalfunctioning.
1. Disconnect all USB devices from the remote
extender.
2. Disconnect the local extender from the
computer.
3. Disconnect the remote extender from the AC
power adapter.
4. Reconnect the local extender to the computer.
5. Reconnect the remote extender to the AC
power adapter.
6. In the Universal Serial Bus controller’s section
of Device Manager, check that the RG2204
is recognized as a“Generic USB Hub”.
RG2204 system
was working, but
the Host LED on
local and remote
extenders are
suddenly blinking.
•Theremoteextenderisin
suspend mode.The operating
system may put the RG2204
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 remote extender.
All LEDs on both
the local and
remote extenders
are on, but the USB
device does not
operate correctly
or is detected
as an“Unknown
Device”in the
operating system.
•TheUSBdeviceis
malfunctioning.
•Thecomputerdoesnot
recognize the USB device.
•Theapplicationsoftwarefor
the device is not operating.
•TheRG2204ismalfunctioning.
1. Disconnect the RG2204 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 RG2204.
Connect the RG2204 to the computer.
6. If the second device does not operate, the
RG2204 may be malfunctioning. Contact
technical support for assistance.
7. If the second device operates properly, the first
device may not be compatible with the RG2204.
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