Specifications
Conceptronic Wireless 54Mbps USB Adapter 
LEDs 
Your new C54RU has two LEDs on the antenna housing, so they can be seen when 
the C54RU into a USB slot in your desktop computer. 
The two LEDs operate in concert to inform you about the status and activity of your 
C54RU. 
When the two LEDs flash alternately, the C54RU is searching for a wireless network 
connection − either to an Access Point or to another WLAN NIC. 
When both LEDs flash in unison, there is a valid wireless network connection, and 
there is activity over the link (data is being transferred). If the C54RU has 
established a valid wireless network connection, but there is no activity, the two 
LEDs will flash in unison, but much more dimly. 
When the C54RU is disabled, only the Link LED flashes. 
The following chart describes the full functions of the two LEDs. 
The two LEDs are labeled Link and Act (Activity), as shown below. 
What the LEDs are 
doing 
What that means 
LEDs are flashing 
alternatively 
The C54RU is 
searching for a 
wireless network 
connection. 
LEDs are flashing in 
unison 
The C54RU has made 
a valid wireless 
network connection, 
and there is activity 
on the link. 
LEDs are flashing in 
unison, but dimly 
The C54RU has made 
a valid wireless 
network connection, 
but there is no 
activity on the link. 
This could be caused 
by an Access Point 
that is functioning, 
but not connected 
to the wired 
network. 
Only the Link LED is 
flashing 
The C54RU has been 
disabled. 
Only the Link LED is 
flashing, but slowly 
The C54RU has 
entered its Power 
Save Mode. 
A
ct 
Link
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