Jonty WareingWhat is the most inappropriate connector with enough pins to support USB-C?
I suggest:
Lexi@jonty and dmesg is very unhappy when I try to plug in something more advanced than a keyboard
Martin Ling@lexr @jonty It completes the High Speed chirp negotiation, but fails to exchange actual packets. Which is not exactly surprising, but it's cool that we can see it :)
Klaus Frank@agowa338 @lexr @jonty For USB High Speed (480Mbps) signalling to work, the D+/D- pair needs to be close to the right differential impedance (90 ohms) all the way along the signal path.
Proper USB cables have twisted pairs of the right geometry to hit that. A random DB25 serial cable from 1993 does not. So the signal bounces around inside the cable and interferes with itself.
However, the High Speed negotiation only involves a 10kHz square wave. So that bit works, but 480Mbps packets don't.
@jonty OK so round two, this time with a gender changer instead of a cable, we're getting USB 3 transfer speeds and nearly 60W of power delivery! This is almost practical to use, it barely gets hot at all! 😄
keirFox@lexr Proper background.
bizzl / fourteen bit@lexr Love the wallpaper! Commissioned, or can I get it somewhere myself?
@bizzl https://codeberg.org/GamePlayer-8/xenia/src/branch/main/art/svg/xenia_sunrise.svg there's plenty more in there
