USB can refer to more than just what’s on a flash drive. Although many cables and connectors have USB in the name, unless there is a letter following it, the USB is just a bus. A bus is the way data moves between parts of a computer. When referring to “USB” remember that you are referring to a bus. As files get larger and larger make sure you have devices that can handle the media you are creating! Shop USB Flash Drives and USB External Hard Drives on our Shop page. The differences may be confusing but the key thing to remember is that the noticeable differences are in speed. If you see these more friendly terms around, you know what speed you’re getting.
The USB-IF recommends these more market friendly names to the USB standards: Most computers and peripherals are still only using USB 10Gbps cables and I/O connectors. There are very few computers that support USB-C at the highest speed. The point with the slowest rating controls the speed of the transfer. Note that even if the cable and connector you use are rated at a certain speed, the host and receiver of the data must also be able to send or receive at that speed. So you may be in luck with your devices being equipped with USB-C and USB 3.2 Gen 2×2 I/O ports. But, USB-A, B, and micro B can all carry the USB 3.2 Gen 2×1 and prior versions.Īlthough USB-C is backward compatible, it only more recently has been added to the hardware of newer computers and peripherals. USB Connectors and Backwards CompatibilityĪs mentioned before, USB-C is the only connection type that can carry the new USB 3.2 Gen 2×2 rating. The USB family naming system was updated again which differentiates between the new transfer modes. USB 3.2 is only available on USB-C connectors because it utilizes extra pins that were designed for the reversibility of USB-C. The new transfer speeds boast an impressive 2.4GBps making it almost 2.5x faster than USB 3.0. Manufacturers can advertise products with the slower speed (600MBps) as USB 3.1 and not specify which generation.
Just because the label says USB 3.1 doesn’t mean you’re getting a faster flash drive or device. When you are looking at a listing for USB 3.1 devices, make sure you check the transfer speed as well. USB 3.1 Gen 2 = 1,250MBps, 128B/132B signal (Faster speed, new encoding signal).USB 3.1 Gen 1 = 600MBps, 128B/132B signal (Formerly USB 3.0 speed, new encoding signal).Any of the newer encoding standards, even if the speeds are slower, are listed as USB 3.1. Anything with the old encoding standard is listed as USB 3.0. This makes an easy differentiation between the old encoding signal, named “8B/10B”, and the new encoding signal, named “128B/132B”. Instead, they renamed the 600MBps USB 3.0 to “USB 3.1 Gen 1” and gave “USB 3.1 Gen 2” as the name to the faster 1,250MBps standard. In 2013, the USB Implementers Forum (USB-IF) announced that they would be increasing the speed of USB 3.0 to 1,250MBps from 600MBps. History, Encoding, and Speeds of USB 3.0, 3.1, and 3.2 USB 3.0 and USB 3.1 A little bit of math, 2MB transferring at a speed of 1MBps would take 2 seconds to transfer. For perspective, phone camera photos in late 2021 are around 2 megabytes (MB).
Don’t confuse this with megabits per second (Mbps). If you haven’t read our blog post on the difference between USB 2.0 and 3.0, view it by clicking here.ĭata transfer speeds are rated in megabytes per second (MBps). Read more to find out the differences between USB 3.0 vs 3.1 vs 3.2! Manufacturers with clever marketing can manipulate the naming schemes to make you think you’re getting a product you aren’t. The only thing you need to pay attention to is the transfer speeds. You may have seen them branded as SuperSpeed USB 5Gbps/10Gbps/20Gbps. Here’s the short answer… USB 3.0 is 5Gb/s, USB 3.1 is 10Gb/s, and USB 3.2 is the fastest at 20Gb/s.
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