Crossover Cables
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| This document shows how to properly construct an ethernet Crossover network cable. This cable can be used to cascade hubs, connecting two Ethernet hosts back-to-back without a hub or switch, or connecting two CSU/DSU's back to back for local testing of Wide Area Network (WAN) configurations. This crossover cable will work for 10BASE-T & 100BASE-TX. NOTE: You cannot use crossover cables on 100BASE-T4 devices. Use Category 5/5e unshielded twisted-pair (UTP) cable. The maximum cable distance between the port and the attached device is 100 meters (328 feet) including all patch cables, panels, and connectors. The minimum length is 1 meter (3 ft). |
| Pin |
Colors on one end of Cable |
Pin |
Colors on other end of Cable |
| 1 |
White/Orange (TD+) |
1 |
White/Green (RD+) |
| 2 |
Orange/White (TD-) |
2 |
Green/White (RD-) |
| 3 |
White/Green (RD+) |
3 |
White/Orange (TD+) |
| 4 |
Blue/White (N/A) |
4 |
Blue/White (N/A) |
| 5 |
White/Blue (N/A) |
5 |
White/Blue (N/A) |
| 6 |
Green/White (RD-) |
6 |
Orange/White (TD-) |
| 7 |
White/Brown (N/A) |
7 |
White/Brown (N/A) |
| 8 |
Brown/White (N/A) |
8 |
Brown/White (N/A) |
Cat 5e to 6a Crossover Cable:
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| Pin |
Colors on one end of Cable |
Pin |
Colors on other end of Cable |
| 1 |
White/Orange (B+) |
1 |
White/Green (C+) |
| 2 |
Orange/White (B-) |
2 |
Green/White (C-) |
| 3 |
White/Green (C+) |
3 |
White/Orange (B+) |
| 4 |
Blue/White (A+) |
4 |
White/Brown (D+) |
| 5 |
White/Blue (A-) |
5 |
Bronw/White (D-) |
| 6 |
Green/White (C-) |
6 |
Orange/White (B-) |
| 7 |
White/Brown (D+) |
7 |
Blue/White (A-) |
| 8 |
Brown/White (D-) |
8 |
White/Blue (A+) |
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