IDE is a standard interface for connecting a hard disk drive or CD ROM to a personal computer. IDE which stands for Integrated Drive Electronics is an early version of the AT Attachment (ATA) specification. The name IDE was due to the hard drive controller being integrated on the drive itself rather than a separate controller on the host computer.

Enhanced IDE (EIDE) is an extension to the original standard allowing support for drives larger than 528Mb up to 8.4Gb.

The terms IDE and EIDE can be used interchangeably with ATA