ATA and EIDE
These are the most common terms for the same devices, although they are usually incorrect.
According to CompTia's Guide to Hardware, ATA refers to drive interface standards as published by ANSI.
IDE refers to the technology used internally by the hard drive.
EIDE is used by manufacturers to refer to the parallel ATA (P-ATA) that CD drives, DVD drives, Zip drives, tape drives, and IDE hard drives use to connect to the mothermoard.
While IDE is used more commonly abroad, EIDE is a more complete and accurate definition.
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