Identifying USB Port Version

USB stands for Universal Serial Bus. It is an industry standard that allows data exchange and delivery of power between many various types of electronics.

Here is a common way to identify USB port version in a desktop PC/ laptop. To know the USB female port type-A, is by looking into what color is in the inner plastic. White indicates USB 1.0, black USB 2.0 & blue USB 3.0

USB-A is rectangular and the most well-known. The connector is designed with a plastic plate on the bottom, requiring it to be connected to a port in a specific orientation. USB-A is commonly used with computers.

The first generation of USB (1.0) was released in 1995 and capable of transferring data at 1.5 Mbps, which ran mouses, keyboards and gamepads. The updated version, USB 1.1, increased that speed to up to 12 Mbps.

USB 2.0, the second generation, was introduced in 2000 and capable of data transfer speeds up to 480 Mbps. USB 2.0 offered plug and play capabilities and heralded the popularity of the USB flash drive. USB 2.0 was also backwards compatible with USB 1.0 and 1.1 ports.

USB 3.0 was released in 2008 and transferred data at 5 Gbps. In contrast to previous generations, USB 3.0 offered data transmission in two directions, meaning downloads and uploads could occur simultaneously. USB 3.1, released in 2013, increased the speed of data transmission up to 10 Gbps and USB 3.2 (2017) up to 20 Gbps, though USB 3.1 remains more common. USB 3.0 is also backwards compatible


USB 4.0 was announced in 2019 with release anticipated in 2021. The biggest expected advantage of USB 4.0 will be its ability to keep up with the world’s increasing data demand, capable of transferring data up to 40 Gbps. USB 4.0 will be backwards compatible with both 3.0 and 2.0 ports and devices.


One Reply to “Identifying USB Port Version”

Leave a Reply

Your email address will not be published. Required fields are marked *