• USB (Universal Serial Bus) 2.0 Ports: Each motherboard often has a couple of these ports for connecting pen drives and external hard drives, such as Ipods or MP3 players.
• USB allows communication between computer mainboard components and host devices.
• USB 1: speed ranges from 1.5 to 12 Mbps
• USB 2: 480 Mbps 'High Speed' rate
• USB 3.0 and USB 3.1 have raw data transmission rates of 5 Gbit/s and 10 Gbps, respectively.
• Because its transfer rates are faster than the PS/2 connector, current computers lack a PS/2 port. USB ports are available in a wide range of designs and sizes.

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