The USB Implementers Forum (USB-IF for those who need another USB acronym) has been busy lately fromto upgrade the current USB Rename default. With a fingercut – OK, a white paper – .
And if that's not confusing enough, the new USB 3.2 branding also includes the older USB 3.0 standard to create a total of three USB 3.2 variants. And if is not confusing enough, the USB 3.2 variants can also be described with a series of "SuperSpeed USB" marketing phrases.
seems to be straightforward: it uses the connector and provides transfer speeds of up to 40 gigabits per second while baking in Quality. While we await the arrival of USB 4 at a far-away, yet to-be-determined date (end of 2020 is the best guess), we have to move through the current mess of USB 3.2. To give you an idea of the USB branding that you find with current products, we want to find out what and how we came here.
Not the first change of USB name
This is not the first time that USB names have been used moved USB 1
We are now in a similar location with USB 3.2. The latest, fastest version of USB 3.2 offers a maximum speed of 20 Gbit / s and is called USB 3.2 Gen 2×2. (The 2×2 means it's the second generation and has two 10 Gbps lanes to reach the maximum throughput of 20 Gbps.) The older USB 3.1 has a single 10 Gbps channel and is called USB 3.2 Gen 2. Then there is USB 3.0, which is now called USB 3.2 Gen 1.
Know your USB 3.2 versions
If you are looking for the above mentioned USB 3.2 Gen 1 and 2 names, If you're trying to make the best possible connection between your devices, your work is not done. This is because there are separate marketing conditions for each of the three versions of USB 3.2 that the USB-IF encourages providers to use for their packaging. (Whether providers will follow this suggestion or use the above terms remains to be seen.) You need to know both terms.) The marketing terms for USB 3.2 devices are: SuperSpeed USB, SuperSpeed USB 10Gbps and SuperSpeed USB 20Gbps.
You may find it helpful to avoid confusion and USB branding headaches when you post everything in the table:
USB 3.2 Versions
|New Name||Old name||Original name||SuperSpeed Name||Maximum speed|
|USB 3.2 Gen 2×2||N / A||USB 3.2||SuperSpeed USB 20Gbps||20 Gbps|
|USB 3.2 Gen 2||USB 3.1 Gen 2||USB 3.1||SuperSpeed USB 10Gbps||10 Gbps|
|USB 3.2 Gen 1||USB 3.1 Gen 1||USB 3.0||SuperSpeed USB||5 Gbps|
Type A vs. C
But wait, there is more! USB not only offers different speeds, but also different physical forms. USB type A connectors are rectangular. You need to insert your cable right side up. USB Type-C connectors are smaller, oval, and reversible because you do not have to know which end is up. (Type B connectors are the larger, square-shaped connectors you've probably seen on the back of a printer.)
All USB 3.2 Gen 2×2 products use the Type-C connector, but not all USB-C connectors are USB 3.2 Gen 2×2. A USB-C port can be either 20 Gbps USB 3.2 Gen 2×2 or 10 Gbps USB 3.2 Gen 2. A USB type A port can be 10 Gbps USB 3.2 Gen 2, 5 Gbps 3.2 Gen 1 or even USB 2.0. USB 4 will eliminate this confusion next year, but until then you need to read the fine print of the products to make sure you get the expected USB 3.2 connection between your devices.
One thing you do not have to worry about a newer USB product does not work with an older device. USB 3.2 devices are backwards compatible with all existing USB products. What you sacrifice is throughput; Two products with different USB functions work with the transfer speed of older devices.
No, this is not a city police department. USB PD stands forand offers the ability to charge all types of devices. It used to be a convenient way to charge your phone in an emergency. USB has now been developed to charge larger, more powerful devices with larger, more powerful batteries. USB PD can reach up to 100 watts, enough to charge laptops and tablets.
USB PD knows how much power to use for a given device, from a maximum of 100 watts to charge your laptop up to a fraction of it to complete the phone. USB PD is also smart enough to know that the laptop should charge the phone when connecting the phone to the laptop and not the opposite. If you see a product with the USB PD label, it can serve as a universal charger for most, if not all, USB devices.