this post was submitted on 27 Jun 2025
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iiiiiiitttttttttttt
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you know the computer thing is it plugged in?
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Yeah, why is this the case? I have to refer to a diagram whenever I punch down a jack. Always forget where the green goes.
Blue in the middle is pair 1. Orange around that is pair 2. Green on the left, brown to the right.
CC-B-AA-B-DD.
Pair A is for telephone back when Ethernet was wired to a punch down block. Pair B and C are for data. Swap b and c on one end for crossover.
The fourth pair is basically useless.
Thankfully I don't need to worry about that for stuff later than ~2010.
Yeah but it still explains the โwhy?โ