eMachines EL1320 用户指南

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Chapter 2: Setting Up and Getting Started
18
Connecting network cables
We recommend using category 5 (
Cat 5
), unshielded, 
twisted-pair cable (about 1/4-inch diameter with a thin 
outer-jacket, containing eight color-coded wires), and 
equipment compatible with this type of cable. This 
type of cable is equipped with RJ-45 connectors (like 
a large telephone jack connector, but with eight pins) 
on each end.
Cat 5 cables are available in two different types; 
straight-through cables, used to connect computers to 
a router, and crossover cables, used to connect two 
computers.
To determine which type of cable you have, hold both 
ends of the cable with the connectors facing away 
from you and with the spring clip on the bottom. For 
straight-through cable, the wires on both connectors 
are attached to copper pins in the same order (same 
colors, left to right). For a crossover cable, the wires 
on each connector are attached to the copper pins in 
a different order (different colors, left to right).
Setting up a network using a router
If you are setting up a network for more than two 
computers and you will be connecting your network 
to a high-speed Broadband Internet connection (cable 
or DSL modem), we recommend the use of a router. 
A router lets you access the Internet connection from 
any network computer. The router can assign IP 
addresses to the computers on the network and can 
provide firewall protection for your network as well.
MU0000000_eM_ENG_V09A3.book  Page 18  Wednesday, August 19, 2009  5:06 PM