USB 3.0 is a Universal Serial Bus (USB) standard, released in November 2008. Most new computers and devices being manufactured today support this standard, which is often referred to as SuperSpeed USB.

Devices that adhere to this USB standard can theoretically transmit data at a maximum rate of 5 Gbps (5,120 Mbps), but the specification considers 3,200 Mbps more reasonable in everyday use. This is in stark contrast to previous USB standards like USB 2.0 that, at best, can transfer at 480 Mbps, or USB 1.1 that tops out at 12 Mbps.

USB 3.2 is an updated version of USB 3.1 (SuperSpeed+), though USB4 is the latest standard. USB 3.2 increases this theoretical maximum speed to 20 Gbps (20,480 Mbps), while USB 3.1 comes in at a maximum speed of 10 Gbps (10,240 Mbps).