Convert a Zyxel console cable to a Cisco console cable

If you have a console cable for a Zyxel device and you want to convert it to a Cisco console cable, remove the 8P8C end and rewire as following:

+-----+--------------+---------------+
| DB9 | Cable color  | 8P8C position |
+-----+--------------+---------------+
|   1 | Brown        | 5             |
|   2 | Green        | 3             |
|   3 | White green  | 6             |
|   4 | Orange       | 7             |
|   5 | White blue   | 4             |
|   6 | White orange | 2             |
|   7 | Blue         | 8             |
|   8 | White brown  | 1             |
|   9 | Not wired    | Not wired     |
+-----+--------------+---------------+

So left to right with retaining clip not visible:

White brown – white orange – green – white blue – brown – white green – orange – blue

Pinout for the original Zyxel cable

+-----+--------------+---------------+
| DB9 | Cable color  | 8P8C position |
|-----+--------------+---------------+
|   1 | Brown        | 8             |
|   2 | Green        | 6             |
|   3 | White green  | 3             |
|   4 | Orange       | 2             |
|   5 | White blue   | 5             |
|   6 | White orange | 1             |
|   7 | Blue         | 4             |
|   8 | White brown  | 7             |
|   9 | Not wired    | Not wired     |
+-----+--------------+---------------+

So left to right with retaining clip not visible:

White orange – orange – white green – blue – white blue – green – white brown – brown

References

  • Cisco cable pin-out: http://pinouts.ru/SerialPortsCables/CiscoConsole9_pinout.shtml
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