EIDE refers to an interface standard first developed by Western Digital, since its inception in 1994, EIDE has gone through many changes, both technologically and by name.

The interface controls storage devices like hard drives, CD ROM drives, and CD Writers.

Seagate introduced their own implementation of the EIDE standard which is commonly known as Fast ATA.

Typical EIDE transfer rates are up to 16.6 MBps, the newer Ultra ATA standard, which is a variation of EIDE but developed by Seagate, can reach data transfer rates of up to 33 MBps.

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