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Different Types of Buses (continued)

IDE bus

Transfers data between storage devices and the chipset

USB (Universal Serial Bus) and FireWire (IEEE 1394)

Transfer data one bit at a time at a variable pace

Not rated with a MHz speed; rated by peak transfer rate.

USB

Faster than standard serial connections, with a peak transfer rate of 1.5 MBps.

Considered a low-speed bus and is designed to handle low to medium-speed peripherals

An extension to USB-1 is USB-2, which supports data rates up to 60 MBps versus the 1.5 MBps in USB-1; USB-2 is fully compatible with USB-1.

FireWire

High transfer rate designed for high-speed external peripherals such as DVD-ROM and hard disk drives

FireWire 2 (IEEE 1394b) emerged with data rates up to 100 MBps, double that of FireWire 1 (IEEE 1394).

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