Alfa ADH16SB User Manual

 Check if the power cord is properly connected to the power outlet and the  

hub. Make sure the power switch on the hub is turned ON. .

 Check the power switch of the network devices attached to the hub, make 

sure they are turned ON. 

 Check the network cable, make sure it is properly connected to the hub and 

the network device.

 

Check the network cable, make sure the cable complies with EIA/TIA 568 

   specification. Use straight-through Category 5 cables for 100Mbps 
   connection and  Category 3 or higher cables for 10Mbps connection.

   

Check the slide switch and make sure it s in normal position when you use 

the last port on the hub to connect to workstations or file servers.

 Make sure the cable is connected to the "uplink" connector. 
 Check the network cable, make sure it is properly connected to both hubs.  

One end of the cable should be connected to uplink port while the other end 
of the cable should connected to a regular port. Do not connect the cable to 
both uplink ports.

 Check the network cable, make sure the cable complies with EIA/TIA 568 

    specification. Use Category 5 cables for 100Mbps connection.

   

 

Check the network cable, make sure the maximum length does not exceed 5 

    meters (15ft) in 100Mbps connection and 100 meters (300ft) in 10Mbps 
    connection.

 Remove all the network cables, connect the cables back one by one to 

isolate the source of the collision.

 Check the network cable, inferior cable quality will result in excessive 

collision and error packets.