C H A P T E R 1

Intel Express 460T Standalone Switch Users Guide

Straight-through vs. Crossover Cables

Switch ports are wired for MDI-X. Use a straight-through cable to connect to a workstation or server (network adapter cards are wired MDI). To connect to another MDI-X port, use a crossover cable. Following are the pin arrangements for the switch’s Ethernet port and the typical RJ-45 connector.

Pin 8

8

Ethernet

1

 

Port

 

Pin 1

Clip

RJ-45 Connector

Straight-through UTP cable (for 100Base-TX)

Switch (MDI-X)

Adapter (MDI)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

(RX+)

1

(TX+)

2

(RX-)

2

(TX-)

3

(TX+)

3

(RX+)

6

(TX-)

6

(RX-)

4 Not used

4 Not used

5 Not used

5 Not used

7 Not used

7 Not used

8 Not used

8 Not used

Crossover UTP cable (for 100Base-TX)

Switch (MDI-X)

Hub (MDI-X)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10/100

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

(RX+)

1

(RX+)

2

(RX-)

2

(RX-)

3

(TX+)

3

(TX+)

6

(TX-)

6

(TX-)

 

4 Not used

 

4 Not used

 

5 Not used

 

5 Not used

 

7 Not used

 

7 Not used

 

8 Not used

 

8 Not used

10

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Intel 460T manual Straight-through vs. Crossover Cables, Straight-through UTP cable for 100Base-TX