You must log in or register to comment.
It gets even better, each function of the port also needs proper support from the cable. Often cables do not support the full spec of usb to cut costs.
While the symbols in the post are often put on computers, for usb cables this is seldom done (only a few brands do).
Source: had to find a cable that supports both DP and PD to connect a portable external monitor after I lost the original cable. (1/9 cables worked)
Yes, this is incredibly annoying and it’s also the reason why some USB cables cost more than others, even they may look the same superficially.
One of those cables that don’t work is rated for like 120W, with gigabit transfer speed… But it refuses to transmit display… Like bruh
1080p at 60 Hz is 4.4 gigabit
Didn’t really think about that one but you’re right damn… (Looked it up, and it depends on the bit depth etc, but it’s around 3.2Gbps for the display settings if I’m correct)… So that explains a lot
Gigabit is capable of like 720p@30Hz which it probably should be able to fall back on, but I understand why they wouldn’t do that haha. 1080p@15Hz is also possible :)
USB-C video is usually DisplayPort Alt Mode, which uses a completely different data rate and protocol from USB.
Even using old 2016 hardware, a computer and USB-C cable that both only support 5 Gbps USB (such as USB 3.1 Gen 1) can often easily transmit an uncompressed 4K 60Hz video stream over that cable, using about 15.7Gbps of DisplayPort 1.2 bandwidth. Could go far higher than that with DP 2.0.
Some less common video-over-USB devices/docks use DisplayLink instead, which is indeed contained within USB packets and bound by the USB data rate, but it uses lossy compression so those uncompressed numbers aren’t directly comparable.
For that portable monitor, you should just need a cable with USB-C plugs on both ends which supports USB 3.0+ (could be branded as SuperSpeed, 5Gbps, etc). Nothing more complicated than that.
The baseline for a cable with USB-C on both ends should be PD up to 60W (3A) and data transfers at USB 2.0 (480Mbps) speeds.
Most cables stick with that baseline because it’s enough to charge phones and most people won’t use USB-C cables for anything else. Omitting the extra capabilities lets cables be not only cheaper but also longer and thinner.
DisplayPort support uses the same extra data pins that are needed for USB 3.0 data transfers, so in terms of cable support they should be equivalent. There also exist higher-power cables rated for 100W or 240W but there’s no way a portable monitor would need that.
Yeah, it’s gotten so bad I eventually ordered a USB cable checker to figure out what any given USB cable is capable of (and to see if the cable has gone flaky, which seems to happen a lot). I haven’t received it yet so I don’t know if I can recommend this item, but … gosh darn you sure need something like this.
Luckily, all new PC seem to choose Thunderbolt over only alt mode, which makes stuff more easy, since they have the flash on the cable (but are also more extensive, I gear
Sometimes people want to charge their phone in an outlet 10 feet from their airport seat.
Sometimes people want to transmit 8k video.
It’s not physically possible to do both tasks with the same cable.
But because USB is a flexible standard, we don’t have two incompatible specs to do the same thing. So when you get out of the airport and to your meeting, you can actually plug your phone into the meeting room projector for your business presentation. That’s a win.
exept when manufacturer don’t give a fuck and print whatever or nothing next to the port. like always
TL;DR: The USB Implementers Forum is ridiculously bad at naming, symbols and communication in general. (And they don’t seriously enforce any of this anyway, so don’t even bother learning it.)
This is the correct answer; after the whole USB 3.2 Gen 2 2x2 (hands of blue) bullshit, I wouldn’t trust that team to name a park bench in the middle of the desert. Let alone something important and universally used.
It basically gets longer every few years. At this rate, it’ll turn into an Amazon listing.
USB 3.5 Gen 3 2x2 20 Gbit Two-Sided DP PD USB 3 USB 2 USB 1 Compatible
We could have gone for already proven and tested conventions like the resistor color codes and have a unique distinguishable icon for each features to attach when needed (like thunder icon for high power). But nope, we got this
USB 3.2 Gen 4 2x2 Hyper Turbocharged World Champions and Knuckles Platinum Editionbs instead.The bench is called “Bench” (legacy name, it’s actually more like a concrete slab, but at the time it was more benchy that the previous bench which was just a pile of sand).
the whole USB 3.2 Gen 2 2x2 (hands of blue) bullshit
If you’re not trying to wire your own USB port you can just use the recommended names “USB SuperSpeed 20 Gbps” or “USB 20 Gbps”. You don’t have to be confused by technical names if you don’t want to be.
The real bullshit is between your ears–you and only you can fix it.
“Just plug your device in, you little bitch”
They are not bad at this. You are bad at understanding it.
Don’t get mad when you could instead learn something.
Yes it gets complex. It’s a 25-year old protocol that does almost everything. Of course it will be.
But the names are not hard if you bother to learn them.
They are not bad at this. You are bad at understanding it.
I work with this stuff, and I do understand it. Some of my colleagues are actively participating in USB-IF workgroups, although not the ones responsible for naming end user facing things. They come to me for advice when those other workgroups changed some names retroactively again and we need to make sure we are still backwards compatible with things that rely on those names and that we are not confusing our customers more than necessary.
That is why I am very confident in claiming those naming schemes are bad.
“don’t even bother learning it” is my advice for normal end users, and I do stand by it.
But the names are not hard if you bother to learn them.
Never said it is hard.
It is more complex than it needs to be.
It is internally inconsistent.
Names get changed retroactively with new spec releases.
None of that is hard to learn, just not worth the effort.
They’re bad because manufacturers want to pass their usb 2.0 gear as “usb 3.0 compliant”, which it technically is, and their usb 3.0 gear as “usb 3.2” because 3.2 Gen 1x1 is also 5gbps.
Also the whole alternate mode is awesome, but cheap hub chips don’t bother trying to support it and the only people who do are the laptop ports so they can save $.40 on a separate hdmi port.
And don’t get me started on all the USB-c chargers that only put out 1.5a because it’s just a normal 7805 on the back end.
They’re bad because manufacturers want to pass their usb 2.0 gear as “usb 3.0 compliant”, which it technically is, and their usb 3.0 gear as “usb 3.2” because 3.2 Gen 1x1 is also 5gbps.
The USB X.X is just the version of the standard and doesn’t mean anything for the capabilities of a physical device.
When a new standard comes out it superceeds the old one. Devices are always designed and certified according to the current standard.
Soooo…What are you talking about?
I’m talking about using the standard traditionally to denote the performance of the connection.
You don’t go around talking about your “Usb 3.0 device” that runs at 480mbps unless you’re trying to be a massive dickhole.
That’s what I’m talking about.
480mbps
A device or port that does 480mbps transfer speeds is a “Hi-Speed” device/port. That’s the real name and always has been.
It doesn’t matter what version of the USB spec it was certified under. If it was designed between 2000 and 2008 it was certified under USB 2.0 or 2.1
If that device was certified between 2008 and 2013 then it was certified under USB 3.0. That absolutely doesn’t make it a “SuperSpeed” device/port, but that’s more than clear when we use the real names.
Nobody uses that, they use the spec number because that’s what they’ve been taught, and they identify with it more than the incredibly stupid ‘full/high/super/duper/ultramegahyperspeed’ convention which the idiots at the siig decided to break again in 3.2.
Everybody literally on the planet agrees the system is moronic, you’re literally the only person who dissents, congratulations on that.
They come to me for advice when those other workgroups changed some names retroactively again
Can you give a specific example of this?
I’d love to believe all your ethos arguments if you could give me some logos.
There is some stuff to be learned, but especially with USB-C I’d say the vast majority are not labeled. There’s even some devices charged with USB C that can’t be charged with a PD charger and need an A to C cable. Phones are a great example where you have to look up the specs to know data transfer capabilities. Additionally they renamed the USB 3.0 standard which has been established for over a decade to USB 3.1 Gen 1 which is completely unnecessary and just serves to confuse. The standard was largely understandable with USB 3.0 generally being blue or at least a color other than black and on decently modern devices USB 2.0 would be black. With USB-C indication has just about gone out the window and what used to be a very simple to understand standard has now become nearly impossible to understand without having researched every device and cable you interact with.
There’s even some devices charged with USB C that can’t be charged with a PD charger and need an A to C cable
Phones with qualcomm chips briefly had their own proprietary fast charging standards that were not a USB standard. You are unlikely to be using those devices in 2024. But is it USB-IF’s fault manufacturers tried to create proprietary standards to collect royalties?
Additionally they renamed the USB 3.0 standard which has been established for over a decade to USB 3.1 Gen 1 which is completely unnecessary and just serves to confuse
No they didn’t?
The 5Gbps transfer rate introduced in 2008 is called “Superspeed” and it always has been.
USB X.X is not a port or a transfer speed. It’s the standard (ie a technical whitepaper). The standard is updated as time marches on and new features are added.
The standard was largely understandable with USB 3.0 generally being blue or at least a color other than black and on decently modern devices USB 2.0 would be black.
This was never a requirement, but it was nice to know which Type-A ports had 8 pins vs 4-pins.
With USB-C indication has just about gone out the window and what used to be a very simple to understand standard has now become nearly impossible to understand without having researched every device and cable you interact with.
For the most part you just plug it in and it works. If you need something specific like an external GPU connection, you can’t use your phone charging cable, sure. Is that really that big of a deal?
But is it USB-IF’s fault manufacturers tried […]
Yes, it absolutely is USB-IF’s fault that they are not even trying to enforce some semblance of consistency and sanity among adopters. They do have the power to say “no
soupcertification for you” to manufacturers not following the rules, but they don’t use it anywhere near aggressively enough. And that includes not making rules that are strict enough in the first place.
LOL, yeah, manufacturers don’t follow this at all.
The USB-C standard and particularly the USB PD (power delivery) is so complex it almost feels comical.
The PD standard document (freely available on usb.org) is over 800 pages long and features a lengthy part about the role of the cable alone which is mostly hidden from the user. Here’s a short video about this issue: https://www.youtube.com/watch?v=6bZ0y9G-4Pc
Do you regularly read highly technical whitepapers? I don’t see how an 800 page document is comical for something that works so well.
The USB standards are just… Comically overcomplicated. And almost everything about it is optional. They need a full revamp, making it simpler and mandatory on all future ports, devices and cables.
But they won’t do that, will they.
Almost everything about it needs to be optional because sometimes USB is used to charge some cheap battery powered thing and sometimes it’s used to make a backup of a harddrive and sometimes it’s charging my laptop with enough power for it to be rendering video but still have a net charge increase to the battery while also providing Ethernet, video output, and keyboard/mouse input over the same one port.
EDIT to make it more clear why the variability of USB standards is what it is, compare a modern laptop to one from 10 years ago.
The older laptop has:
- for video, an HDMI port (or the less common mini HDMI port), and perhaps a mini DP port
- an Ethernet port
- a charging plug
- possibly some FireWire ports (may or may not be the same as the mini DP port)
- USB A ports for keyboard/mouse and other random devices
The newer laptop has:
- USBC ports that can do all of the above
The perhiperals, however, don’t support all of the features. They only support the features they actually use. As long as the laptop supports all of the optional features, you don’t need to worry about it.
The is especially helpful for less technical users who may not want to know what the difference between HDMI and DisplayPort is. With a fully USBC based laptop and USBC perhipals you can just plug it in and it will work.
Of course this is all dependent on the laptop implementing all of the extra features, which is still only really true of more expensive laptops.
There should be a way to make it simpler.
Idk, something like “for USB 4 you NEED all of these”.
Or maybe USB 4 with levels like bronze, silver, etc.
Or make displaying data rate, display and charging capabilities all mandatory on all ports…
I’m not sure what, but “it’s a USB port; look in the manual and if you’re lucky you might learn what it does exactly” ain’t it.
People do not want to be limited to 1m long cords or only have thick and stiff Thunderbolt3 cords with 20 different conductors for a wired mouse.
Minimum specs like you are proposing just make the standard less useful and would lead to more competing specs that aren’t compatible at all (a la lightning cables).
To be a truly “universal” spec, flexibility is king.
Maybe optional opt out? Like to say you are usb-4 you have to have this format and support all of these features. Other you are USB 4 W/O x,y,z,PD,Video,etc. I also think PD levels should be labeled on power sources and sinks.
except its bot competing standards, its just one consortium who has the holy grail universal standard making things needlessly convoluted on purpose.
I miss FireWire, too.
I remember having a FireWire in one of the family desktops when I was a kid. Can’t remember what we might have used it for, though.
It resides in the same vague memory hole as the Zip drive that we had.
Firewire was phenomenal for external hard drives. The speed was almost as fast as the drives so you were rarely limited by the port.
Yep, that’s because the actual data transfer was handled by the more capable device, instead of only the guest. I think the standard also required a minimum throughput, iirc, whereas USB only had a maximum.
Yeah, the ZIP drive was just starting to take off when the Internet killed needing a sneaker net (at least of that size). Add in CD-ROM drives which you needed anyway. And good night.
I had a FireWire hard drive! I remember I bought specifically the enclosure that supported both standards since my motherboard had a FireWire port and on paper it was faster than usb! Too bad the HDD was as slow as molasses
Now that was a peripheral protocol standard.
sigh
Thank God there’s a standard for USB. And another one. And another one. And another one. And another one. And another one. And another one. And another one. And another one. And another one. And another one. And another one…
USB = Unintelligible Symbols of Bewilderment
My laptop has two USBC ports. No logos of any kind. They are Thunderbolt 4. ¯_(ツ)_/¯
Here, you’ve lost an arm: \
If you’re trying to get Lemmy to print the backslash, you need to make it a double backslash since backslash is an “escape” character that means “ignore any special formatting meaning of the next character” (among other meanings)
Reddit was the same exact way. I don’t know how people are messing it up here too.
I have never seen one with SS, but maybe they removed that part in Germany.
For those that don’t know
Thank god that no one made a transfer speed standard of 88 Gb/s
For the people don’t know… https://en.wikipedia.org/wiki/88_(number)#In_neo-Nazism
That’s for USB 14.
stop
hammer time!
Duplicated message
stop
I looked at two Dell laptops and a Geekom mini PC, all bought in Germany, and they all have the SS symbol.
I see them on the back of full size computer cases and on docks. They will often be one SS port on the top. I had no idea what it meant before now.
Also don’t forget the dubious AliExpress devices that have all these symbols, no data lines, Vcc at 12V and ground attached to a loose M8 nut.
Most devices don’t have theese symbols and basically say fuck you unless you know how to find the specs
Every device I have just has a couple of blue ones and a couple of black ones, perhaps some orange ones and some USB-C ports, and good luck figuring out what they all can do. No symbols anywhere.
It’s cool, the colors are just for aesthetics. Internally they’re all connected to the same USB controller chip anyway.
/s probably
Edit: it was a joke. I know blue means 3.
If they’re following the standard, which they often do but sometimes don’t, white indicates 2.0 and blue indicates 3.0+. I think there are more but I don’t remember the other colours.
Black is USB 2, blue is USB 3, and Orange or Yellow are usually “always on” and/or 2.4 amp or some other kind of thing like that.
Not on all vendors tho - coloring was an optional part of the standard. Dell often uses grey for USB3
I believe yellow or orange ports always deliver charging power regardless of device’s power state.
Additionally, USB 3.0, 3.1 and 3.2 labels provide no information on the speed. Rather, “Gen 1” means 5Gb/s, Gen 2 means 10 and Gen 2×2 means 20Gb/s. These “Gen” labels are seldom found on products however.
So for example USB 3.2 Gen 1 is 5Gb/s while USB 3.1 Gen 2 is 10Gb/s
The dear people at the USB Forum should be rewarded with the Nobel prize in namology for their clear, superior and non-confusing naming scheme and naming process that even the nerdiest of nerds can’t follow.
This has already been fixed by the forum FYI, the new spec is to just put clear text labels that denote the capability of the port. I can’t find the article I read but this one has an example of the new user-facing branding.
Behind the scenes, here’s what those labels correspond to:
-
USB 5Gbps: USB 3.0 and 3.1 Gen 1
-
USB 10Gbps: USB 3.1 Gen 2, 3.2 Gen 2×1, and 3.2 Gen 1×2
-
USB 20Gbps: USB 3.2 Gen 2×2
-
USB 40Gbps: USB4’s initial version as currently shipping
That’s cool. But even though it finally adds simplicity, it’s still yet another renaming of the same things.
Here’s a snippet from an article from 2019:
The upcoming 20 Gb/s USB 3.2 connection, which offers twice the speeds of the previous iteration, will be known as ‘USB 3.2 Gen 2x2’. Its predecessor, ‘USB 3.1’ will be rebranded to ‘USB 3.2 Gen 2’, while ‘USB 3.0’, which ran at 5 Gb/s speeds, will be termed ‘USB 3.2 Gen 1’.
Reading that I want to shoot myself, and even the latest change, which probably is a good one, drives me slightly mad due to the history of renaming everything so many times.
the history of renaming everything so many times.
Every time a new USB spec comes out the version number goes up. A new spec comes out because they add more features. The spec is a whitepaper that explains all the features. It’s a “The King is dead, long live the king!” situation.
If you just never used the version numbers to mean something that they never meant (transfer speeds) then literally none of this is confusing.
They’ve officially renamed the transfer speeds one time after people made a big huff. here’s how they changed:
-
USB SuperSpeed -> USB 5Gbps
-
USB SuperSpeed 10Gbps -> USB 10Gbps
-
USB SuperSpeed 20Gpbs -> USB 20Gbps
And If you can’t follow along with that, I’m really, really sorry. There’s not much I can do from a internet discussion board. XD
Yes, I am the only one confused. It’s not like half the tech internet blew a gasket over how confusing and bad the renaming of the generations were. Just me. I guess I should just read the whitepapers of every standard going forward, silly me.
Well if there’s anything I expect from the new-cycle masses, it’s rationality.
Heaven forbid, we try and do better!
I guess I should just read the whitepapers of every standard going forward, silly me.
You don’t have to read whitepapers to know the difference between Ethernet, CAT6 and RJ45 even if your grandpa doesn’t know the difference.
It’s not too much to expct the “nerds” to know the real names of PAN connections, too.
I aspire to be as cool as you.
-
-
All so sales people can slap on a 3.2 sticker over the 3.1 that was on top of the 3.0 sticker…
Do people care? You just plug in your thing and it works, fast enough in most of the cases.
Additionally, USB 3.0, 3.1 and 3.2 labels provide no information on the speed
Correct.
USB X.X is the name of the technical whitepaper that describes the standard.
For a long time, USB had three transfer rates. The first legacy speed (slowest) was hardly ever used. The Second was called “Full Speed” and the fastest was called “Hi-speed”. Because people could not remember which if these two were faster, they referred to the whitepapers in which they were introduced.
When later versions of USB were introduced people have tried to continue this mental “shortcut” and have caused themselves nothing but confusion.
Meanwhile my thumb drive:
The best I can do is 20Mbps with the curve xy = 1
Mine is worse, it says it can do way more than 20Mbps, but once the buffer is exhausted, it hangs frequently. And this isn’t some random POS from AliExpress, I bought it retail at BestBuy.
If you’re ok with some bulk, go for an nvme enclosure. I have a sabrent one with a 256 GB crucial gen 3 drive in it, it’s a slow cheap drive, still substantially better than any usb key and you can put one together for under $100 cad including a longer high speed cable.
I just did a fresh install off of my usb key and wow, super slow compared to any time I’ve done off my enclosure
Good idea! I don’t need it very often (like maybe once/year?), but I’ll keep it in mind the next time I start looking for my USB drives again.
Like that guarantees quality.
It certainly doesn’t, but it’s understandable for users to expect that paying a premium at a place like BestBuy should result in getting a better product that picking up something on Amazon.
I generally do my research, but in this case, I needed it in a pinch to flash a Linux ISO to get my computer up and running because I couldn’t find any of my other ones. I expected to get ripped off, so I’m not too mad about it, but I was surprised at how crappy it was since I figured USB drives are largely a solved problem.
And this is why I largely avoid BestBuy and steer others from it, stuff costs more (though they do match if you ask), and they tend to carry crappy accessories and peripherals. It’s basically Walmart quality crap priced higher than better products at Microcenter, all because customers either don’t know better or don’t have any other retail options.
