OnePlus Announces the OnePlus 9 Series – DTH

DTH-6-150x150OnePlus announces the much leaked OnePlus 9 series, Microsoft is reportedly in talks to acquire Discord, and China issues new rules on necessary information mobile app developers can collect from users.

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A License to Zoom – DTNS 3992

Zoom will begin selling access to its API for companies to embed video calling into their own products, Microsoft will start a limited reopening of its headquarters in Redmond and Seattle on March 29th, and preservation group Hidden Palace has obtained 752 PS2 game prototypes for the Project Deluge initiative.

Starring Tom Merrritt, Sarah Lane, Patrick Norton, Roger Chang, Amos, Joe

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US House Plans Series of Smaller Antitrust Bills – DTH

DTH-6-150x150The US House Judiciary Subcommittee on Antitrust plans to introduce 10 or more smaller antitrust bills targeting large technology companies, Microsoft begins a partial reopening of two headquarters, and the HomePod Mini includes an inactive temperature and humidity sensor.

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Week in Review for the Week of 3/15/21 – DTH

DTH-6-150x150Facebook wants to help people book vaccine appointments, Uber reclassifies their U.K.-based drivers as workers, and HBO Max to launch an ad-supported version.

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Are You Ready for Some Streamball – DTNS 3991

The MPAA notes that online video subscriptions rose 26% to 1.1 billion in 2020, passing 1 billion worldwide for the first time. Is this just a pandemic spike or are the numbers here to stay?

Starring Tom Merritt, Sarah Lane, Lamarr Wilson, Roger Chang, Joe, Amos

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Facebook mostrará centros de vacunación para el COVID19 – NTX

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Facebook mostrará centros de vacunación para el COVID, Spotify lanza la iniciativa Loud & Clear y HBO Max llegará con una versión con publicidad a más de 60 países.

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Instagram Working on Platform For Younger Users – DTH

DTH-6-150x150An internal company post says Instagram is working on a version of its platform for users 13 and younger, Amazon Prime Video is the exclusive partner for Thursday Night Football, and Apple reportedly warns Chinese developers using tools to circumvent its App Tracking Transparency rules.

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NASA’s New Tire is So METL – DTNS 3990

Sony shows off their new PSVR 2 controllers while Facebook is working on an AR wrist controller. ATT wont be exempting HBO from data caps, and we may never have to worry about our bicycle tires going flat.

Starring Tom Merritt, Sarah Lane, Justin Robert Young, Amos, Joe.

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Sony Reveals PS5 VR Controllers – DTH

DTH-6-150x150Sony reveals the PS5 VR controllers, Facebook makes changes to its Groups policies, Amazon expands Amazon Care healthcare program.

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About USB4

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Tom shares the history of the USB standard and the real benefits and limitations of USB4.

Featuring Tom Merritt.

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Episode Script
I hear I can now get stuff with USB4. What the heck does that get me?
USB has been a mess and confusing and I don’t know if I want another number?
Also it relates to Thunderbolt 4 somehow?
Are you confused?
Don’t be.
Let’s help you Know a Little more about USB4
USB stands for the Universal Serial Bus, a standard released first in 1996 to provide an industry standard for connecting peripherals and computers.
It is maintained by the USB Implementers Forum or USB-IF, a non-profit group founded in 1995 by Compaq, Digital, IBM, Intel, Microsoft, NEC and Nortel – it’s expanded its membership since of course.
Friends, before USB, each peripheral had its own connector and you couldn’t use the same wire or port for the other. Well there were a few exceptions but for the most part, a monitor had a VGA connector, a printer used a serial Port, a mouse used a PS/2 port and examples like that were many.
People at the founding companies of the USB-IF got together in 1994 to fix that mess and make it easier to plug things into computers and make it cheaper to make the computers because you didn’t need a separate port for every single peripheral someone might want to connect.
A team at Intel led by Ajay Bhatt produced the first integrated circuits to support USB in 1995. And Joseph C Decuir credited his work on the Atari SIO 8-bit communication implementation as the basis of the standard.
The USB 1.0 specification was officially released in 1996 and supported 1.5 megabit/second low speed and 12 megabit per second full speed data transfers. The high speeds were meant for printers and floppy drives, the lower speeds for cheaper peripherals with unshielded cables like joysticks and your mouse.
Microsoft began supporting USB in Windows 95 OSR 2.1 in August 1997. Apple’s iMac was the first mainstream product to support it and popularize it starting in August 1998.
It took off from there.
USB 2.0 arrived in April 2000 adding a higher signaling rate of 480 megabits per second and adding the Mini and Micro connectors.
USB 3 came along in November 2008 bringing superspeed capability at 5 gigabits per second and the blue ports to designate them. USB 3.1 followed in December 2014 doubling the speed to 10 gigabits per second called SuperSpeed Plus. And USB 3.2 arrived in September 2017 allowing for multi-lane operation to get data rates of 20 gigabits per second.
That brings us to the present. USB4 was released as a spec on August 29, 2019. And when you’re searching for info remember that unlike previous specs the USB-IF spells USB4 without a space between the B and the 4. All one term USB4.
While USB 3.2 was designed for use over USB-C cables – you know the small reversible ones–, USB4 is the first spec to require it. USB4 does not run over previous USB ports or connector types without an adapter.
ALSO USB 4 incorporates Intel’s Thunderbolt 3 spec. A USB4 host or peripheral device does not have to support Thunderbolt 3 but it can. The spec does require USB4 docks to support Thunderbolt 3 and hubs to support Thunderbolt 3 on the downward-facing ports – aka the one that peripherals plug into.
USB4 is mostly an attempt to simplify USB. The spec itself can be said to just tunnel other specs, like Thunderbolt, DisplayPort, USB 3.2, USB 2.0 and PCIe. It is therefore backwards compatible with all of those.
Also a USB4 connection requires USB Power delivery of at least 7.5 Watts per port up to 100 watts. So no more trying to guess if a USB port provides power or not by looking for the little lightning logo. It does. And it will make sure it only sends as much power as your device can handle.
The first products supporting USB4 arrived near the end of 2020 and the connector became common in new products released in 2021.
So what do you get if you get USB4?
USB 4 can share a single link with multiple end device types. So you can daisy chain. AND you get speed. USB4 devices must support 20 Gigabit per second data and can support up to 40 gbps data. And with video you can get an even faster effective rate. We’ll talk about that in a minute.
So while USB4 does simplify things quite a bit over previous USB versions you still have to check a device to know whether you’ll get 20 or 40 gbps. To help with that, packaging will carry a USB20 or USB40 logo to help you tell the difference. Ports and cables get a more stylized logo that just says 20 or 40 with the little USB trident symbol.
Oh and none of the logos say USB4, just the bandwidth amount. So if you see USB40 you’re getting USB4 with 40 gbps capability.
But that’s it. Even USB 3.2 had lower-speed variants. USB4 has just the two. 20 and 40.
The other thing that you’ll need to check for is that previously-mentioned Thunderbolt compatibility.
Intel is no longer charging for implementation of Thunderbolt 3. And Thunderbolt 3 uses the USB-C connector just like USB4. That means a new computer with a USB4 port could offer compatibility with your existing Thunderbolt 3 devices. Could but not must. The spec makes it optional. Most devices seem to be implementing it because why not, but you will want to make sure it’s there if it’s important to you.
So how does Thunderbolt 4 fit in? Well some are looking at it is that Thunderbolt 4 gives you USB4 at its highest capacity with all its options. We have a whole separate episode on Thunderbolt 4 if you want all those details.
As I mentioned a minute ago, there’s also a situation where USB4 can handle more than 40gbps. That’s because it can also support DisplayPort Alt Mode 2.0 for high resolution displays. If that DisplayPort spec is implemented in a USB4 device it can transmit video data– just video data– at 80gbps meaning you can power multiple DisplayPort 2.0 displays at 8K and 60Hz refresh rate or one 16K monitor at 60 Hertz. And yes, a bunch of 4K monitors if you have that many. It achieves this by using all the lanes to send video data and leaving none to receive. So to get that speed you won’t share the connection with anything else but monitors.
Also if you’re not using every lane for display purposes, USB4 is smarter than USB 3.2 in how it allocates bandwidth. You could do that on previous USB versions but the lane would be split 50-50.
USB4 can divide up its capability dynamically. If you have a USB4 device that can support 40gbps, Your 4K monitor could be given 12 Gbps and your external hard drive would use the remaining 28 Mbps all on the same connection.
Oh and what about cables. Well good news your old cables will work. And other news they won’t work faster than they used to. If you have a 5gbps cable that’s all you’ll get out of it.
Finally this is it for USB4. No 4.1 etc. The next version of USB is intended to be called USB5. Simple.
Right?
I hope this helps you cut through the confusion. Thankfully the USB-IF has helped us do that. Thanks USB-IF!
In other words I hope now you know a little more about USB4.