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You can set the speed that the printer will use for Ethernet communications. In most cases, you should select [Auto Select: Enable 1Gbps] or [Auto Select: Disable 1Gbps] according to your network environment. This setting allows two interfaces to automatically determine the optimum speed when they are connected.
For details about Ethernet Speed settings, see Host Interface.
A connection cannot be established if the selected Ethernet speed does not match your network's transmission speed.
In order to reduce power consumption of network devices, the default Ethernet speed of the printer is up to 100BASE-TX (100 Mbps). If you need communication with a higher speed, select [Auto Select: Enable 1Gbps] to enable 1000BASE-T (1Gbps) communication.
Press the [Menu] key, and then select the setting items using the [
] or [
] key.
Select [Host Interface] 
Press [OK]
Select [Network] Press [OK]
Select [Ethernet Speed] Press [OK]
Select the Ethernet speed. Press [OK]
