892
Ol' reliable
(lemmy.nz)
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
this post was submitted on 25 Sep 2026
892 points (98.4% liked)
memes
22749 readers
1885 users here now
Community rules
1. Be civil
No trolling, bigotry or other insulting / annoying behaviour
2. No politics
This is non-politics community. For political memes please go to !politicalmemes@lemmy.world
3. No recent reposts
Check for reposts when posting a meme, you can only repost after 1 month
4. No bots
No bots without the express approval of the mods or the admins
5. No Spam/Ads/AI Slop
No advertisements or spam. This is an instance rule and the only way to live. We also consider AI slop to be spam in this community and is subject to removal.
A collection of some classic Lemmy memes for your enjoyment
Sister communities
- !tenforward@lemmy.world : Star Trek memes, chat and shitposts
- !lemmyshitpost@lemmy.world : Lemmy Shitposts, anything and everything goes.
- !linuxmemes@lemmy.world : Linux themed memes
- !comicstrips@lemmy.world : for those who love comic stories.
founded 3 years ago
MODERATORS
T568B is the one everyone uses while T568A is the odd one.
I don't get what's particularly bad about T568A though? I was told it's just plain worse than T568B for anything faster than gigabit and I swear I never saw any store bought cables using it.
The configuration has absolutely no bearing on performance. It is purely for standardization. Straight through cables work with either because it's literally just connecting the copper on either end. The difference between A and B is just flipping 2 pairs around although I forget which. Only 4 or 5 cables of 8 are even used to this day which is crazy.
There are 4 pairs of 2 wires, for 8 overall. They are all used, but the pairs are redundant. From what I understand, when you send a positive pulse on, say, the solid blue wire, you also send a negative pulse on the stripy blue and white wire. The twisted pairs should counteract any interference, but if it doesn't, the arrival of the bumps with opposite polarity should foolproof things a little.
Oh yeah it's called differential signalling.
I think it's something to do with the crosstalk between strands.