The change in connector types is the first thing that most people notice when comparing USB 3 and USB4. USB 3 VS 4 – How Are They Different?Įach iteration of USB 3 had various improvements compared to the previous versions, and the same is true for USB4 as well. ![]() It does retain some similarities with its predecessors, though, such as in the form of the exclusive use of the Type C form factor and backward compatibility. ![]() It specifies a max transfer rate of 40 Gbps and tunneling of USB 3.2, DisplayPort, and PCIe, which allows for way better resource allocation. USB4 brought forth a number of significant improvements compared to its predecessors. As such, it works for everything from displays and power cables to storage devices. USB4 is the latest USB standard based on the Thunderbolt 3 specification. In 2017, Intel provided the Thunderbolt protocol specification to USB-IF, who eventually released USB4 in August 2019. USB 3.2 doubled the max transfer rate to 20 Gbps, and it specified exclusive use of the Type C connector. This was no longer the case after August 2017, when the USB 3.2 standard was released. ![]() The USB 3.1 standard specified the use of the same connector types as USB 3.0 (Type A, Type B, Micro-A, Micro-B, and Micro-AB). USB 3.1, introduced in July 2013, increased this further to 10 Gbps. This specification introduced the SuperSpeed transfer mode, which massively bumped up the max transfer speed from 480 Mbps to 5 Gbps. USB 3, or rather USB 3.0 specifically, is a USB standard released by the USB Implementers Forum (USB-IF) on Nov 12, 2008.
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