Unfortunatly when I aquired it the network interface wasn't working ( I suspect auto negotiation had been disabled) so I needed to console into it to get it factory reset and working.
Well, APC are a bunch of plonkers and tend to use odd connectors and pinouts on their console cables so you spend more money to aquire them. Well, I'm too
smart tight for that, so I looked into making my own with bits I had around the house. After a trip to the parts boxes I returned with an old Cisco Console Cable and some RJ12 connectors and just needed to figure out the required pinout.
After a bit of tweaking I mangaged to get something functional made up
- Cisco Console Cable ( A USB one will work assuming it has a standard RJ45 end)
- RJ11 / RJ12 crimp on connectors
- Crimping tool for said connectors
- Experience crimping connectors
Before we can make up a cable we need to understand the pin numbering for these connectors. If you're looking at the top-down, with the retaining tab facing the floor, Pin 1 is on the left handside. The same applies to the RJ45 and RJ11/12 connectors.
Cisco RJ45 Pinout
First of all take a look at the RJ45 connector on the end of the Cisco Console Cable and make a note of the order of the colours. They might be different to those listed below so double check carefully!
APC RJ11 Pinout
Once crimped it should look something like the picture below. Note that you should be able to do it much neater with the outer sheath crimped into the connector but this was a quick bodge to test it worked!
And it works! Once I had the cable plugged in I was able to access the console and make the required changes.