Oki ES3640E User Manual page 56

3. Connect an Ethernet cable between the printer unit and
an Ethernet hub. Note the position of the ferrite core on
the network cable fitted close to the printer interface.
4. Turn on the printer unit and then the computer.
If your printer unit is to be installed as a network printer, please
refer to the relevant section in the Configuration Guide for further
details on how to configure the network connection before
installing the printer drivers.
NOTE
Administrator's authority is required when installing a network
connection.
ES3640e MFP User's Guide> 56