Epson TM-C3400BK Technical Reference Manual page 69

For Ethernet Model
When the network setting such as IP address setting on TM-C3400BK was already made,
the setting is applied. The setting can not be changed.
Follow the steps below to install the printer driver and execute the network setting.
1
Turn the printer on.
2
Double-click the icon for Easy Setup "EPSetup.exe".
3
Click [Network] for Ethernet Model.
4
Click [Install].
Chapter 2 Setup
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