Thunderbolt 3 and USB Converge With New 40 Gbps USB4 Specification

The USB Promoter Group standards body today announced the pending release of a new USB4 specification.

macbookairusbc
USB4 converges the Thunderbolt and USB protocols as part of Intel's goal to make Thunderbolt available on a royalty-free basis, which should result in wider and cheaper availability of Thunderbolt accessories like docks and eGPUs.

As USB4 is based on Thunderbolt 3, it offers data transfer speeds up to 40 Gbps, which is twice as fast as the bandwidth of the latest USB 3.2 Gen 2x2 specification. USB4's underlying Thunderbolt 3 protocol also means the specification supports up to two 4K displays or one 5K display over a single cable.

The simplest way to view USB4 is as Thunderbolt 3, but royalty free for manufacturers. Intel will continue to offer Thunderbolt 3 on a standalone basis with a few advantages over USB4, including more support with reference designs and technical issues for manufacturers, according to The Verge.

USB4 will use the USB-C connector design and will be backwards compatible with USB 3.2 and USB 2.0 specifications.

The USB4 specification is on track to be published around the middle of 2019. Over 50 companies are actively participating in the final stages of review of the draft specification, which should include Apple, Intel, and Microsoft, but it might take a few years until the first USB4 devices are released.

Top Rated Comments

haruhiko Avatar
25 months ago
USB4.0 Gen 1 = USB 3.0 = USB 3.1 Gen 1
USB4.0 Gen 2 = USB 3.1 Gen 2
USB4.0 Gen 3 = USB 3.2 20Gbps
USB4.0 Gen 4 HyperSpeed 40 = Thunderbolt 3
Score: 40 Votes (Like | Disagree)
EvilEvil Avatar
25 months ago
Watch Apple will get confused and come out with another cable standard again.
Score: 33 Votes (Like | Disagree)
MattG Avatar
25 months ago


Attachment Image
Score: 22 Votes (Like | Disagree)
Blackstick Avatar
25 months ago

I find it hard to believe that apple will continue down this road for much longer.

They'll drop all the ports entirely first...
Score: 15 Votes (Like | Disagree)
AngerDanger Avatar
25 months ago

Seriously I said this in 2016 and 2017. ( I need to big that up ) And said we need USB 4 instead of all the mess we have with USB 3.2

Finally they are doing something about it!.

Edit:

This means USB-C will now be the only option. No more USB 3.0 / USB 3.1 ( Or as they are now called USB 3.2 Gen1 / Get 2 ) with Type A Connector. Every USB 4 will be USB-C.

And since USB 4 will mandate the 40Gbps and Thunderbolt 3, it means there is certain quality assurance to USB 4 cable.

Finally, there will be a possibility that iPhone will switch to USB 4, may be just USB 4 with 5Gbps Speed. And I am happy to see this change. ( That is assuming they don't mess up the USB 4 Spec )

Can’t believe they ignored you for 2–3 years! Who do they think they are?! :eek:
Score: 13 Votes (Like | Disagree)
citysnaps Avatar
25 months ago
No worries. Many on this forum just want good ol' USB-A on thick laptops.
Score: 12 Votes (Like | Disagree)

Top Stories

16inchmacbookpromain

Kuo: New MacBook Pro Models to Feature Flat-Edged Design, MagSafe, No Touch Bar and More Ports

Thursday January 14, 2021 9:32 pm PST by
Apple is working on two new MacBook Pro models that will feature significant design changes, well-respected Apple analyst Ming-Chi Kuo said today in a note to investors that was obtained by MacRumors. According to Kuo, Apple is developing two models in 14 and 16-inch size options. The new MacBook Pro machines will feature a flat-edged design, which Kuo describes as "similar to the iPhone 12" ...
iphone x camera close

iOS 14.4 Will Introduce Warning on iPhones With Non-Genuine Cameras

Thursday January 14, 2021 8:07 am PST by
In the second beta of iOS 14.4 seeded to developers and public testers this week, MacRumors contributor Steve Moser has discovered code indicating that Apple will be introducing a new warning on iPhones that have had their camera repaired or replaced with aftermarket components rather than genuine Apple components. "Unable to verify this iPhone has a genuine Apple camera," the message will...
prototype iphone 12 pro

Prototype iPhone 12 Pro Shown Off in Photos

Wednesday January 13, 2021 3:39 pm PST by
Developer Giulio Zompetti, who often shows off prototype versions of Apple devices, today highlighted a prototype version of the iPhone 12 Pro. The iPhone 12 Pro is running an operating system called SwitchBoard, a nonUI version of the iOS 14 update that Apple uses internally. We've seen SwitchBoard on prototype devices before, as Apple uses it to test new features. Zompetti's prototype...
find my app safari post

Safari Allows Users to Enable Hidden 'Items' Tab in 'Find My' App Ahead of AirTags Launch

Wednesday January 13, 2021 5:45 am PST by
As seen in screenshots obtained by MacRumors in 2019, Apple's long-rumored AirTags items trackers are expected to be managed through the Find My app on iPhone, iPad, and Mac. Now, any user can get an early look at this tab. MacRumors reader David Chu today alerted us that the hidden "Items" tab in the Find My app can be enabled on an iPhone or iPad by typing in the link findmy://items in...
pioneer carplay wc5700nex

The Best Apple-Related Accessories at CES 2021

Wednesday January 13, 2021 1:16 pm PST by
CES 2021 is taking place digitally this year, and it hasn't been as exciting as in past years because many vendors have opted out. That said, some companies are still showing off some interesting Apple-related accessories that are coming out this year and that will be of interest to Mac, iPad, and iPhone users. Subscribe to the MacRumors YouTube channel for more videos. Pioneer Wireless...
Hue module dimmer switch

Philips Hue Announces New Wall Switch Module, Dimmer Switch, and Outdoor Light Bar

Thursday January 14, 2021 3:11 am PST by
Philips Hue has announced a new wireless dimmer switch module that lets Hue bridge owners directly control the smart lighting from their standard wall switches. The new Philips Hue wall switch module is the ideal addition to any Philips Hue set up. Installed behind existing light switches, it allows users to turn their existing switch into a smart switch and ensures their smart lighting is...
macbook pro 16 inch thunderbolt

Bloomberg: Next-Generation MacBook Pro to Offer Improved Displays, Faster Charging Over MagSafe

Thursday January 14, 2021 11:36 pm PST by
Following today's report from analyst Ming-Chi Kuo outlining major changes for the next-generation MacBook Pro models coming in the third quarter of this year, Bloomberg's Mark Gurman has weighed in with his own report corroborating some of the details but seemingly differing a bit on others. First, Gurman shares more details on the return of MagSafe charging to the MacBook Pro, indicating...
cook cbs this morning

CBS This Morning: Apple to Make 'Big Announcement' Tomorrow Morning

Tuesday January 12, 2021 8:46 am PST by
CBS This Morning today shared a short clip of an upcoming interview with Apple CEO Tim Cook in which addressing last week's events at the U.S. Capitol, with Cook saying "it's key that people be held accountable for it." Following the clip, Gayle King of CBS noted that the interview with Cook was not specifically arranged to address the current controversy over Parler and other repercussions, ...
iOS 14

Apple Seeds Second Betas of iOS 14.4 and iPadOS 14.4 to Developers [Update: Public Beta Available]

Wednesday January 13, 2021 10:03 am PST by
Apple today seeded the second betas of upcoming iOS 14.4 and iPadOS 14.4 updates to developers for testing purposes, with the new betas coming a month after Apple released the first betas. iOS 14.4 and iPadOS 14.4 can be downloaded through the Apple Developer Center or over the air after the proper profile has been installed on an iPhone or iPad. Paired with the HomePod 14.4 beta that is...
caldigit thunderbolt 4 dock featured

CalDigit Introduces USB-C Dock With 10 Ports and Up to 94W Charging for Macs [Updated]

Wednesday January 13, 2021 9:16 am PST by
CalDigit today unveiled a new Thunderbolt 4 dock with a wide selection of connectivity options, including three USB-A ports, one USB-C port, two HDMI 2.0 ports, a Gigabit Ethernet port, an SD card slot, and a 3.5mm headphone jack. The dock also has a Thunderbolt 4 port that allows it to be connected to a Mac with a single cable, with up to 94W of pass-through charging for the latest MacBook...