USB Evolution: From Full-Speed to SuperSpeed+
The Universal Serial Bus (USB) standard is one of the most recognizable and widely used communication interfaces. Since its introduction in 1996, USB has undergone many transformations, increasing its data transfer speeds and improving its efficiency. In this article, we will look at the evolution of the USB standard, from its humble beginnings to the latest versions.
1. USB 1.1: The Beginnings of Full-Speed
USB 1.1, also known as Full-Speed, was the first widely adopted version of USB, offering data transfer speeds of up to 12 Mbps. While this may seem slow today, at the time it was a significant improvement over earlier connection methods.
2. USB 2.0: The Hi-Speed Breakthrough
The introduction of USB 2.0, known as Hi-Speed, was a breakthrough, raising the transfer speed to 480 Mbps. This 40-fold increase in speed enabled faster transfer of large files and became the standard in many devices.
3. USB 3.0: The SuperSpeed Revolution
USB 3.0, called SuperSpeed, brought another revolution, offering speeds of up to 5 Gbps. This speed increase enabled even faster data transfers, which was crucial for new applications and devices that required fast data transfer, such as external hard drives and video cameras.
4. USB 3.1: Complications and SuperSpeed+
USB 3.1 caused some confusion because of its two variants. USB 3.1 Gen 1 maintained the 5 Gbps speed, identical to USB 3.0, while USB 3.1 Gen 2 doubled the speed to 10 Gbps. This new specification, also known as SuperSpeed+, enabled even faster data transfers, but the different naming conventions caused some confusion among consumers.
5. USB 4: A New Era of Connectivity
The latest standard, USB 4, promises another leap forward in technology, offering speeds of up to 40 Gbps. This is a huge leap forward that opens the door to new possibilities in data transfer and device charging.
USB 3.2 - Types and Speeds Guide
USB 3.2, the most popular version of the USB standard today, introduces improved speed and performance, but can be a bit confusing to the average consumer due to the different naming conventions. In this section of the article, we’ll take a closer look at the USB 3.2 specifications to explain what they mean to you and your devices.
-
USB 3.2 Gen 1×1: Standard SuperSpeed
Originally known as USB 3.0, USB 3.2 Gen 1×1 offers data transfer speeds of up to 5 Gbps. This is fast enough for many everyday applications, such as file transfers or video streaming.
-
USB 3.2 Gen 2×1: Dual SuperSpeed
Previously known as USB 3.1, USB 3.2 Gen 2×1 doubles speeds to 10 Gbps. It’s ideal for more demanding tasks, like quickly transferring large files or supporting higher-quality video.
-
USB 3.2 Gen 2×2: Quad SuperSpeed
The latest and fastest, USB 3.2 Gen 2×2, reaches speeds of up to 20 Gbps, using two lanes of data traffic. This means it is able to transfer data at 2500 MB/s, which is ideal for the most advanced applications and devices.
USB-C Connector: Versatility and Speed
USB-C is currently the most versatile connector, supporting not only data transfer but also power delivery and video output. With four pairs of pins, called lanes, USB-C can support various USB 3.2 specifications, including the fastest Gen 2×2.
New Logo and Charging Specs
In September 2022, the USB Implementers Forum introduced a new logo to help consumers identify ports, chargers, and cables that comply with the latest specifications. The new USB PD 3.1 Power Delivery specifications allow for charging at up to 240W.
What does this mean for the user?
For the average user, USB 3.2 means faster data transfer speeds and more efficient charging. However, it is important to pay attention to the markings and logos to make sure the devices and accessories you buy are compatible with your existing hardware
USB4 - The Future of Universal Connectivity
USB4 is the latest innovation in computer interfaces that promises to revolutionize the way we connect devices. Building on the success and versatility of Thunderbolt 3, USB4 offers an impressive bandwidth of up to 40 Gbps, meaning large files can be transferred in the blink of an eye.
What's more, USB4 is not only fast, but also versatile. Its connector is identical to USB-C, making it easier for users to use different devices without having to carry around a lot of different cables.
The minimum USB4 specifications provide data transfer rates of 20 Gbps and the ability to drive a single 4K display.
USB4 can also deliver up to 240W of power, which is enough to power a laptop or other power-hungry devices. This makes USB4 the perfect solution for those who need a reliable and fast connection at work, at home or on the go.
Additionally, backward compatibility with Thunderbolt 3 and 4 and USB 3.2 and 2.0 means users don't have to worry about compatibility with their existing devices.