I am starting to see computers with USB C on the host side. The future of one single connector to rule them all will be here soon. Wait a minute, we already had that, it was usb 2.0?!?!
I never saw anyone hooking up a monitor via USB 2.0
USB4 Specification Announced: Adopting Thunderbolt 3 Protocol for 40 Gbps USB
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Re: USB4 Specification Announced: Adopting Thunderbolt 3 Protocol for 40 Gbps USB
#42I am starting to see computers with USB C on the host side. The future of one single connector to rule them all will be here soon. Wait a minute, we already had that, it was usb 2.0?!?!
Re: USB4 Specification Announced: Adopting Thunderbolt 3 Protocol for 40 Gbps USB
#43Earlier quoted context omitted.
Nope. Much simpler. Just enabling the use of the other data lanes that were already in the cable waiting to be used one day. USB-C has 4 differential twisted pair data lines.
That sort of explains why USB cables have been getting more expensive. More copper.
Re: USB4 Specification Announced: Adopting Thunderbolt 3 Protocol for 40 Gbps USB
#44Re: USB4 Specification Announced: Adopting Thunderbolt 3 Protocol for 40 Gbps USB
#45Does this also mean that soon every computer will be making noise/radiating waves around 40GHz? Can someone with more depth in this area shine some light on this?
Is tinfoil-hatesque EMF poisoning real? I personally believe that it is real (just go camping where there's no service and you'll feel better) but it's hard to prove without decades of study and money, which won't happen because there's so much money to be made. There are other reasons why camping makes you feel better. Earthing/grounding gets you in touch with the earth's natural schumann resonance (through the canv…
Re: USB4 Specification Announced: Adopting Thunderbolt 3 Protocol for 40 Gbps USB
#46Re: USB4 Specification Announced: Adopting Thunderbolt 3 Protocol for 40 Gbps USB
#47I’d love to ditch HDMI (even on my television!)
I'm actually really happy with HDMI. It doesn't change much, has good compatibility and doesn't confuse a video cable for anything else. To me its universality makes it better than display port. My next PC will likely have 2 HDMI ports and that will make me very happy. Lots of USB for other stuff but the speed won't be an issue there - no need for USB 4 data rates because... who needs it?
On a tangent, I did see a ~2004 DVI projection-screen tv at a thrift shop once but I couldn't figure out how to get it to output audio. Then it hit me, it uses regular old RCA cables!
Re: USB4 Specification Announced: Adopting Thunderbolt 3 Protocol for 40 Gbps USB
#48As someone who knows next to nothing about how USB actually works and just uses it, what goes into making each USB generation faster? At the physical layer, is it the materials in the cables are getting better? Or new ways of using the same materials? At the protocol layer, is it newly developed computer science theory being applied or is it just old fashioned pragmatic engineering iteration, looking at usage and mak…
I'm no means an expert but up to USB 2.0 there were 4 pins (2 for power and 2 differential signals for bidirectional data) With USB 3.0 they added 4 more signals for separate transmit/receive. Initially they used 8b/10b encoding and then switched to 128b/132b encoding. They also increased the signaling rate with each generation. Also in the USB 2.0 and earlier the higher level protocols were kind of inefficient with…
So is it not actually serial any more?
Re: USB4 Specification Announced: Adopting Thunderbolt 3 Protocol for 40 Gbps USB
#49I don't understand how this isn't simply ratifying/renaming current TB3-on-Type-C-connectors and this cryptic sentence in the page doesn't help. Anybody know?
This isn't to say that such a renaming might not be a good idea! But it would be nice to know if my current Type C ports with TB and DB support were in fact already "USB 4.0."
Also: speaking of nomenclature: notice that according to the press kit slide show, USB 3.1 Gen 2, USB 3.2 Gen 2x2, and USB4 all have the same "Alternative Branding": "Super Speed+". Madness!
Re: USB4 Specification Announced: Adopting Thunderbolt 3 Protocol for 40 Gbps USB
#50tl;dr: Intel made Thunderbolt 3 royalty free in 2018, so now it's essentially being adopted as USB4. I had to look up what the point of 40Gbps was, and the industry evangelization site https://thunderbolttechnology.net/ explains that it will allow driving one 5k display or two 4k displays, which is not possible with the 20Gbps offered by USB 3.2 or Thunderbolt 2. This also helps external GPUs, where TB2/USB3.2 is the…
Does 40Gbps mean two 4K displays daisy chained?