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ATA 66/100/120

ATA/66 is an extension to the ATA protocol that effectively doubles the top data transfer speed of Ultra ATA to 66 MB per second. ATA/100, ATA/120, ATA/133, etc. are all subsequent improvements that further increase the overall transfer speed. These all require an Ultra DMA bus, and are able to transfer data at speeds up to the fastest speed supported by the bus and the drive.

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