Hmmm, the colours of my CAT5 cable do not match the colours shown in the previous reference.
I can only assume over the years the standard has changed.
https://sites.psu.edu/wsithelp/2017/...iring-diagram/
(I now find we have T-268A v's T-268B wiring colours!!
https://www.startech.com/en-au/faq/n...-a-vs-b-pinout )