Edimax Technology AR-7211B V2 - Manual (Page 6)

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 Do not put this device close to heat sources or high temperatures. Keep
the device out of direct sunshine.
 Do not put this device close to a place where it is damp or wet. Do not
spill any fluid on this device.
 Do not connect this device to any PCs or electronic products, other than
those which you are instructed or recommended to do so in the
product’s documentation, by our customer engineers or by your
broadband provider – connecting to incorrect devices may cause a fire
risk.
 Place this device on a stable surface.
1.4. LED & Button Definitions
Front Panel
Figure 1
LEDs Color Status Description
Green ON Powered on
OFF Powered off
Red ON ADSL broadband initial self-test failed or upgrading
firmware
ADSL Green ON ADSL line is synchronized and ready to use
SLOW
BLINK ADSL synchronization failed ( Please refer to Note
1)
FAST BLINK ADSL negotiation is in progress.