APPENDIX C Cables and Pinouts

Crossover Wiring

Figure 61: Straight-through Wiring

EIA/TIA 568B RJ-45 Wiring Standard 10/100BASE-TX Straight-through Cable

White/Orange Stripe

 

 

Orange

 

 

 

1

White/Green Stripe

1

 

End A

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Blue

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End B

 

3

3

 

 

 

 

 

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White/Blue Stripe

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White/Brown Stripe

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Brown

CROSSOVER WIRING

If the twisted-pair cable is to join two ports and either both ports are labeled with an “X” (MDI-X) or neither port is labeled with an “X” (MDI), a crossover must be implemented in the wiring. (When auto-negotiation is enabled for any RJ-45 port on this switch, you can use either straight- through or crossover cable to connect to any device type.)

You must connect all four wire pairs as shown in the following diagram to support Gigabit Ethernet connections.

Figure 62: Crossover Wiring

EIA/TIA 568B RJ-45 Wiring Standard 10/100BASE-TX Crossover Cable

White/Orange Stripe

 

 

Orange

 

 

 

1

White/Green Stripe

1

 

End A

2

Blue

2

End B

 

3

3

 

 

 

 

 

4

White/Blue Stripe

4

 

 

5

5

 

 

 

 

 

6

Green

6

 

 

7

7

 

 

 

 

 

8

White/Brown Stripe

8

 

 

 

 

 

Brown

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SMC Networks SMCWBR14S-N4 manual Crossover Wiring, Straight-through Wiring