What is USB?

USB (Universal Serial Bus) is a new method of connecting peripherals to a PC that is simpler and more flexible than traditional methods.

For each USB port on a computer, users can connect up to 127 devices. Every time a device is added, the operating system (Win95 Version 2, Win98, Win2000, MAC OS 8.1 or higher) loads the devices automatically, allowing the device to be used without having to reboot the PC. The device may be unplugged, used elsewhere, then plugged back again - and it will work right away without having to reboot the PC.

USB operates at two speeds, 1.5Mbps for devices such as mice, keyboards and scanners, and 122 Mbps for devices using large amounts of data like hard drives and video cameras (compared with older serial ports which have a maximum speed of only 115.2 KBPs).

How do I add USB to my computer?

Most new PCs and laptops come with USB ports included. If your computer does not have a USB port, there are ways to add USB capabilities to your machine. Most motherboards shipped within the last two years are USB capable. With these machines, you can use a USB motherboard cable, giving you 2 USB ports. USB PCI cards are also available, and are the best way to add USB your PC. PCMCIA Cards are also available for laptop users. Then, via USB, you can connect to your serial, SCSI, PS/2 or Parallel Printer via Legacy Adapters.

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