Gateway E1400 System Manual page 12

Power Connector connects the computer power cord. The other end of the
power cord plugs into an AC outlet or power strip.
RJ-45 LAN connector connects a network cable.
Serial port connects serial devices, such as a musical instrument digital
interface (MIDI) device.
USB ports connect external Plug-and-Play devices, such as keyboards and
pointing devices, that are automatically configured when they are plugged
into the computer through one of these ports.
Video port connects the monitor interface cable.
Voltage selector sets the voltage for your area, either 115V (US standard) or
230V.
5
Rear panel