User guide
        ADSL2+ 4-Port Ethernet USB Wireless-G Router - User Guide 
4.5.9  Ethernet Switch Configuration 
The IGMP Snooping prevents the switch from flooding the LAN ports with multicast frames, 
and will instead direct them to the CPU port for processing. Users are able to specify connection 
speed and set their values accordingly from the following available options. See Figure 1-21. 
•  Auto 
•  10/Half Duplex 
•  10/Full Duplex 
•  100/Half Duplex 
•  100/Full Duplex 
Figure 1-21 : Ethernet Switch Configuration 
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