USB 3.0 is a Universal Serial Bus (USB) standard that was released in November 2008. Most new computers and devices produced today support this standard, which is often called SuperSpeed USB.
USB Cables Explained | USB 3.0 3.1 3.2 Connectors
Devices that comply with this USB standard can theoretically transmit data at a maximum speed of 5 Gbps (5,120 Mbps), but the specification considers 3,200 Mbps to be more reasonable for everyday use.
This is in stark contrast to previous USB standards such as USB 1.1, which maxes out at 12 Mbps, or USB 2.0, which can transfer 480 Mbps at best. See USB 2.0 vs USB 3.0 for more differences.
USB 3.2 is an upgraded version of USB 3.1 (SuperSpeed+), although USB4 is the latest standard. USB 3.2 increases this theoretical maximum speed to 20 Gbps (20,480 Mbps), while USB 3.1 reaches a maximum speed of 10 Gbps (10,240 Mbps).
