Twisted-Pair Cable Assignments
Straight-Through Wiring
If the twisted-pair cable is to join two ports and only one of the ports has an internal crossover (MDI-X), the two pairs of wires must be straight-through.
EIA/TIA 568B RJ-45 Wiring Standard 10/100BASE-TX Straight-through 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
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.
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
