Articles

Having replaced serial ports, parallel ports, PS/2 ports and other legacy connectors, USB has furthered its activities through incremental bandwidth upgrades, a robust common connector for all peripherals, and by its worldwide acceptance. There is, however, one significant shortcoming that casts a long shadow over the many advantages of USB: cable distance limitations. USB 1.1 and 2.0 have a cable limit of five metres and although USB 3.0 with its higher throughput, has no precise limit, the best range for consistent transmission is about three metres.