NETGEAR EN104, EN108, EN116 Cable and Connector Information

Make sure the network interface cards installed in the workstations are in working condition and

the software driver has been installed.

If required, verify th e int egrity of the hub b y rese tting it. Turn p ower t o the s witc h off an d then

back on. If the problem continues and you have completed all the preceding diagnoses, contact

NETGEAR Customer Support. For the phone number of the representative in your area, see

“Customer Support.”

For two devices to communicate, the transmitter of each device must be connected to the receiver

of the other device. The crossover function is usually implemented internally as part of the

circuitry in the device. Most ports on s wit ches a nd r epe aters ha v e medi a-dep ende nt inter f ac es wit h

crossover ports. These por ts are referred to as MDI-X or Normal ports. Computer and workstation

adapter cards are usually media- dep endent interface ports referred to as MDI or Uplink ports.

The figures illustrate the use of str aight-through and crossover twisted pair cables.

The RJ-45 connector (shown in the illustration with an RJ-45 plug) is used to connect

workstations, hubs, and switches through unshielded twisted pair cable. The RJ-45 connector

accepts four-pair Category 3 or Category 5 UTP cable. Only two pairs are used for 10BASE-T

wiring.

Cable and Connector Information

Straight-through

twisted pair cable

Crossover

twisted pair cable

8146EC

Uplink or

MDI port Normal or

MDI-X port

Normal or

MDI-X port Normal or

MDI-X port

6Tx

711EA

12345678