3/30/2024 0 Comments Enroute 4 key usb![]() For power delivery, like Thunderbolt 3, we’re looking at 100W of juice.Īlso note that the mentioned more ‘efficient sharing’ means that USB 4 doesn’t waste any bandwidth when sending multiple signals down the cable. With USB 4, you will be able to hook up a pair of 4K monitors (at 60Hz) to your PC (or one 5K display), for example, and it’s fast enough to connect an external GPU. So while this isn’t a hard-and-fast rule, it’s expected that PC vendors will include Thunderbolt 3, although that doesn’t have to be the case – and thus there could be a bit of confusion therein.Īs we’ve said, the new standard isn’t just about speed, and USB-IF has further clarified that USB 4 will involve “multiple data and display protocols that efficiently share the maximum aggregate bandwidth”. USB 4 is also designed to be compatible with Thunderbolt 3, although we should note it’s up to the device manufacturer to implement that compatibility – a decision made because the likes of smartphone makers won’t want to. In terms of compatibility with older standards, USB 4 will be backward compatible with USB 3.2 and devices going back to USB 2.0 (although you will need an adapter to plug the USB 4 cable – which exclusively uses a Type-C connector, like USB 3.2 Gen 2x2 – into old USB ports, of course). ![]() More on that later, but first let’s concentrate on detailing the rest of the spec, speed levels aside. However, it isn’t quite as simple as everyone suddenly being able to benefit from 40Gbps data transfer speeds going forward. That’s obviously a majorly beneficial stride forward in opening up the world of super-speedy 40Gbps connectivity. So, USB 4 is bringing this much faster level of performance to all vendors across the board, whereas previously, this could only be achieved by those manufacturers willing to work directly with Intel (and pay royalties) to incorporate Thunderbolt 3 into their hardware. (Image credit: USBIF) USB 4 spec and performanceĪs we mentioned at the outset, USB 4 is based on the Thunderbolt protocol which Intel made freely available to the USB Promoter Group (which it’s a member of, along with many other tech giants), allowing USB 4 to offer Thunderbolt 3 equivalent speeds of 40Gbps twice that of the preceding USB 3.2 Gen 2x2 standard. It’s a bit of a case of: how long is a USB lead?Īll we can really do is point to the broad expectation that the first USB 4 kit will be pitching up in around a year, at some point later in 2020, although that could slide to the following year. So manufacturers can now begin work on producing devices, but obviously that process will take time – and at this point, we don’t have any exact timeframe. The new standard was first announced back in March 2019, and at the time of writing, has just had the spec officially confirmed by USB-IF.
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