USB 1.1 – 12 Mbps
USB 2.0 – 480 Mbps
USB 3.0 – 5 Gbps
USB 3.1 – 10 Gbps. It carries information at high speeds.
Most current USB devices use USB 2.0.
Latest Motherboards; Laptops USB 3.0 is now being used on external hard disks.
USB Connector Types
Unlike other cables (Ethernet, HDMI, etc.), the connectors used on USB cables come in a variety of sizes and shapes.