Connecting to Power SupplyFigure 4-4  
Note: The gure is to illustrate the application and principle. The power cord you get 
from  the  package and the socket in  your situation  will comply  with  the  regulation in 
your country, so they may differ from the gure above.
After  the  device is  powered  on,  it  begins  the  Power-On  Self-Test.  A  series  of  tests  
run  automatically  to ensure  the  device functions  properly.  During  this time,  its LED 
indicators will respond as follows.
For TL-SG3210 Switch:
The Power LED indicator will light on all the time.
 
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The LED indicators of all the ports will light on for several seconds and then turn off 
 
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after the initialization.   
The System LED indicator will flash, which represents a successful initialization.
 
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For TL-SG3216/TL-SG3424/TL-SG3424P Switch:
 The Power LED indicator will light on all the time.
 
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After  keeping off for  several  seconds,  the LED  indicators  of all the  ports  will  flash 
 
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momentarily and then turn off again after the initialization.  
The System LED indicator will flash, which represents a successful initialization.
 
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Connection