USB generational numbering is sort of straightforward, right? A bigger number means better, and so we have USB 1.1, USB 2.0, uh, 2.0 Revised, USB 3.0, 3.1, 3.2 (but now USB 3.2 Gen something or other), USB4, and USB4 2.0.
OK, what the heck? It’s even more complicated than that with all the name changes and connector types. USB4 is supposed to finish the job that the USB-C connector started but, in practice, it doubles down on the very problems that made USB-C such a mess in the first place.
USB-C was already confusing before USB4
The “E” in USB-C is for “Easy”
Before we lay into the foibles of USB4, the primary culprit of USB-C has to stand trial. USB-C connectors “unify” USB in the most literal way by being compatible with USB 2.0 and later. That sounds good, until you realize this means that any USB-C port (or cable) you see could be anything from slow (but still useful) USB 2,0 to the latest blazing-fast USB4. This is why the USB-C ports on some iPhones and one of the USB-C ports on the MacBook Neo are only USB 2.0. Only good for charging and basic peripherals.
- Operating System
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macOS
- CPU
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A18 Pro
The MacBook Neo with the A18 Pro chip is Apple’s most affordable laptop yet, with all-day battery life and buttery-smooth performance in a thin and light profile.
Actually, charging is the other sore point, since there are so many possible charging standards and rates that a given USB-C cable could support, and you’ll only know when you finally plug it in whether you’re getting a trickle or a flood. So anywhere from 60W (which compliant USB-C cables must support) or 240W, the current limit of the highest-rated cables.
Quiz
USB standards & connectors
Trivia Challenge
From clunky Type-A plugs to lightning-fast USB4 — test your knowledge of the universal serial bus revolution.
HistoryConnectorsSpeedsStandardsHardware
In what year was the original USB 1.0 specification officially released?
Correct! USB 1.0 was released in January 1996 by a consortium led by Intel, Compaq, Microsoft, and others. It aimed to replace the chaotic mix of serial ports, parallel ports, and PS/2 connectors that plagued early PCs.
Not quite — USB 1.0 launched in January 1996. It was developed by a consortium including Intel and Microsoft to simplify the frustrating tangle of legacy ports on personal computers at the time.
What is the maximum data transfer rate of USB 2.0, also known as ‘Hi-Speed’ USB?
Correct! USB 2.0 tops out at 480 Mbps, which is why it earned the ‘Hi-Speed’ label when it launched in 2000. That was a massive leap over USB 1.1’s 12 Mbps Full Speed ceiling, making it practical for external hard drives and cameras.
Not quite — the correct answer is 480 Mbps. USB 2.0 is branded ‘Hi-Speed’ and launched in 2000, offering a 40x improvement over USB 1.1’s Full Speed 12 Mbps mode, which made external storage far more viable.
Which USB connector type was specifically designed for use with mobile phones and cameras, featuring a distinctive 5-pin trapezoidal shape?
Correct! USB Mini-B was the go-to connector for early digital cameras and mobile phones before being largely replaced. It features a recognizable five-pin trapezoidal design and was formally specified in USB 2.0, though it has since been superseded by Micro-B and USB-C.
The correct answer is USB Mini-B. It was the standard connector for early digital cameras and many mobile phones, featuring a 5-pin trapezoidal shape. It was eventually displaced by the slimmer Micro-B connector, which allowed for thinner device designs.
USB 3.0 was later rebranded by the USB Implementers Forum. What is its current official name?
Correct! The USB-IF rebranded USB 3.0 as USB 3.2 Gen 1 to fit into a unified naming scheme. It still delivers the same 5 Gbps ‘SuperSpeed’ transfer rate — the confusing renaming was meant to streamline the standard’s versioning but arguably made it more complicated.
Not quite — USB 3.0 is now officially called USB 3.2 Gen 1. The USB Implementers Forum rebranded the entire USB 3.x family to create a unified naming structure, though the 5 Gbps SuperSpeed performance of the original USB 3.0 remains unchanged.
What key physical feature makes USB Type-C different from all previous USB connector types?
Correct! USB Type-C’s most celebrated feature is its symmetrical, reversible design — you can plug it in either way without fumbling. Introduced in 2014, it also supports far higher power delivery and data speeds than older connectors, making it a true universal solution.
The standout feature is its fully reversible design — you can insert a USB-C plug either way up, ending the frustration of guessing the correct orientation. Introduced in 2014, USB-C also supports higher power delivery and data speeds than its predecessors.
Which organization is responsible for developing and publishing the USB specification?
Correct! The USB Implementers Forum (USB-IF) is the non-profit organization formed by the original USB developers to maintain and promote the USB specification. Founded in 1995, it certifies compliant products and grants the right to use the official USB logo.
The correct answer is the USB-IF, or USB Implementers Forum. This non-profit was founded in 1995 by the companies that originally developed USB, including Intel and Microsoft. It maintains the specification, runs compliance programs, and certifies products to carry the USB logo.
What maximum power output did USB Power Delivery 3.1 introduce, enabling charging of high-performance laptops?
Correct! USB Power Delivery 3.1, released in 2021, dramatically raised the ceiling to 240 watts using Extended Power Range (EPR) mode. This is enough to charge even power-hungry gaming laptops and workstations over a single USB-C cable, replacing bulky proprietary chargers.
The answer is 240 watts. USB Power Delivery 3.1, introduced in 2021, added an Extended Power Range (EPR) mode that maxes out at 240W over a USB-C cable. Earlier PD versions were capped at 100W, which was insufficient for many high-performance laptops.
USB4, released in 2019, is based on which company’s proprietary technology that was donated to the USB-IF?
Correct! Intel donated the Thunderbolt 3 specification to the USB-IF, which became the foundation for USB4. This means USB4 at its fastest tier (40 Gbps) is technically compatible with Thunderbolt 3 devices, blurring the line between the two standards significantly.
The correct answer is Intel’s Thunderbolt 3. Intel donated its Thunderbolt 3 spec to the USB Implementers Forum, and it became the basis for USB4. The top USB4 speed tier of 40 Gbps mirrors Thunderbolt 3, and the two standards share a high degree of compatibility.
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Optional features make “USB4” almost meaningless on its own
You’re just adding more standards!
USB4 was meant to clean things up by folding in technologies like Thunderbolt 3. In theory, that means faster speeds, better display support, and more consistent behavior across devices. The only problem is that to be USB4 compliant you don’t actually need to support all the technologies that are part of USB4!
So a computer or motherboard manufacturer can legitimately label a port as “USB4” and leave out PCIe tunneling, so no eGPUs for you. There are also different performance tiers, so are you getting 20Gbps, 40Gbps, or 80Gbps? It matters too. You can have two laptops with USB4 ports, and one can handle dual 4K displays at high refresh rates, and the other struggles with a single 4K monitor at pedestrian refresh rates.
So what does that “USB4” label even mean, when two products with the same sticker can have wildly different capabilities, and you need to browse a stack of fine print to know which is which?
Cable confusion is worse than ever
USB-C cables are, as I mentioned, already pretty bad when it comes to knowing what a cable can or cannot do, but USB4 does its best to muddy the waters even more. There are cables to match all the different tiers of USB4 when it comes to power and data transfer speeds. Which means you have to worry about three variables (devices, ports, and cables) all aligning perfectly while the ports and cables all look the same.
8/10
- Storage capacity
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2 TB, 4 TB
A USB4 external SSD with a rugged casing made of silicone and aluminum. It comes in 2 TB and 4 TB capacities, and has a 5-year warranty.
Branding and labeling still fail us
Have a look at the official USB performance logo guidelines on page “1:2” of the PDF, and tell me if you’ve ever actually seen these markings on ports or cables? They might be on the packaging, but once that’s gone, you’re out of luck. It also doesn’t help that the logos and naming schemes have been retconned, which means that older devices or cables out there effectively have the wrong labels by modern standards.
Maybe the original idea was to simply have a “USB4” label which would always guarantee a certain set of features and performance. Maybe it would have been better to call new generations that double the speed of these ports, USB5 and USB6, like they do with PCIe or Wi-Fi. But that’s not the world we live in, and so, sadly, you’ll have to contend with squinting at spec sheets or just plugging things in and hoping they work. Welcome to the wonderful world of USB!
Stephan is the sports journalist for the Maple Grove Report.
