These are quite pricey if you buy them pre-made. Depending on how fast you can make them up you can save money.
The self-wire kits I found have the RJ45 connections fixed but let you decide the DB9 pin assigments. The Avocent needs a crossover which means the wiring isn’t one to one. It’s detailed here.
So I don’t lose it again:
| Colour | RJ45 | DB9 |
|---|---|---|
| Blue | 1 | 8 |
| Orange | 2 | 1&6 |
| Black | 3 | 2 |
| Red | 4 | 5 |
| Green | 5 | 7 |
| Yellow | 6 | 3 |
| Brown & White | 7&8 | 4 |
DB9 pin 9 is unused. No idea how standard the colour / RJ45 assignment is. The merging of brown and white wires, and the splitting of the orange into two pins is the fudge: admittedly I thought I was building straight-through connectors when I set out!
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