Overview
Universal Serial Bus (USB) port technology has emerged in response to the proliferation of external peripheral devices (keyboards, mice, scanners, digital cameras, removable drives, etc.), that are increasingly being connected to the latest generation of PCs. The USB is much faster than conventional bus ports (i.e., serial, parallel, PS/2), and since it does not require any IRQs, the problem of IRQ conflict is eliminated, allowing many more devices to be attached to the system.
The
An advantage of this for notebooks, for example, is that now an external mouse and keyboard can be connected up at the same time without causing conflict.
Note: Since most computers only have one or two USB ports,USB hubs are often used to provide additional ports so that numerous USB peripheral devices can be connected up at the same time.
The
For further convenience - especially to users of notebooks, laptops, and handhelds - the
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