Dell 1355 Color Laser User Manual page 48

Ethernet port
NOTE:
Connect the Ethernet cable, only if you need to setup a wired connection.
To connect the printer to the network, connect one end of an Ethernet cable
into the Ethernet port at the rear of the printer, and the other end to a LAN
drop or hub.
To setup a wireless connection, see "Configuring Wireless Settings (Dell
1355cnw Multifunction Color Printer Only)" on page 85.
46
Connecting Your Printer