40gbps is an insane data rate that requires shielding, precision, and testing. There is no way you are getting that for $2. That said, outside of connecting a laptop to your monitor, you don't need a 40gbps cable.
> 40gbps is an insane data rate that requires shielding, precision, and testing. There is no way you are getting that for $2.
I dunno, Cat8 is 40gbps and pretty cheap. DOCSIS 4.0 does 10Gbps on some really ancient cables. I'm sure Cat9 will do even better, at least the cat people and the doc people are trying harder than the USB people.
Unifi even has a PoE-over-coax solution. Add some Anker GaN shit and I'm sure it can be miniaturized.
> outside of connecting a laptop to your monitor
As soon as I need a "special" cable to connect a laptop to a monitor, we're effectively back to the 1990s-2000s when I needed a special monitor cable. There is no point to connector standardization if any cable can't do any function.
The whole point of this thread was "one type of cable for everything" and "grab any USB-C cable from your personal stash and they all work for every use case".
99% of user use cases for USB are charging batteries and copying a word document on a flash drive. For those cases literally every port and cable works. For video, in every office and home, the thunderbolt cable just sits in the monitor at all times with just the USB end free. Meaning there is no confusion around which cable is the video one because the video one only ever sits connected to the monitor.
While I now no longer have to carry around a bag of chargers when I travel or fish through a bucket of black DC adapters for the right one.
There's tons of confusion when I have new usb-c devices like a portable usb-c monitor or a VR headset or some other gadget. I have cables that seem beefy because they do power, but they don't do data, and I end up having to go through a pile of USB-c cables to find one that does data. It's frustrating!
Is it really though? People are selling cables, but 40Gbase-T hardware does not exist, and 10Gbase-T hardware is already crazy power hungry and the SFP+s heat up much you burn yourself if you touch them. Meanwhile USB-C 10 Gbps works on an iPhone.
Meanwhile, Coax is huge and stiff. Good high-speed USB-C cables actually have mini coax inside.
> There is no point to connector standardization if any cable can't do any function.
I completely disagree.
When the only difference between cables is max speed, that's still a huge improvement over a nest of different cable types, half of which are custom. And it's easy to get into a position where all your USB-C cables differ only by max speed.
Which is worse because they all look sort of the same, but they are not the same.
It's even worse for non-techies, who don't understand what a gbps or a watt is, and who will leave a 1-star review, or worse, trash their cable, because their cable was "slow" but was meant for 240W PD but only supported USB 2.0. They purchased it initially because it had 5 stars.
Ideally, there should only be "5 star" USB cables, and they should all work for all purposes that they can physically plug into.
The situation in the early 2000s is I could spot the cable I needed from a mile away.
I have some Thunderbolt cables that are like $80 apiece because they're like 3 meters long. I have like five or six of them because each one only carries one video signal.
(I used Thunderbolt so that touch and pen inputs could go over the one cable. These days though I just use a MacBook Pro, and hook up a capture card when I need to access the Windows)
The apple usb c charging cable is like $30, it is well worth the money of you are into software defined radio I can report. Not sure what magic they pulled of, but all the tricks in the book it seems!
If you're buying a cable for a specific device in a specific circumstance than by all means get the cable that meets that. Then it's not a problem about "what is its functional support", it doesn't matter, that's your mouse cable that you use for your mouse on that desk. That's the monitor cable you use to plug things into that monitor. That's the dock cable you use to plug things into the dock.
For all the cables that are your flex carrying around places where you don't know how it'll be used tomorrow, get a good cable and you won't have any issues.
Yeah? I use a $15 cable for my mouse. And then when my mouse is done charging I put the cable back in the bag with my portable monitor, which the same cable also works for.
that's what i've been paying for cables, and it seems reasonable to me.