TP-Link TL-WR743ND User Manual page 16

If the result displayed is similar to the Figure 3-2, it means the connection between your PC
and the Router is failed.
Please check the connection following these steps:
1. Is the connection between your PC and the Router correct?
Note:
The 1/2/3/4 LEDs of LAN ports which you link to on the Router and LEDs on your PC's adapter
should be lit.
TL-WR743ND
Figure 3-1 Success result of Ping command
Figure 3-2 Failure result of Ping command
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150Mbps Wireless AP/Client Router