IDE, EIDE, UDMA OR ATA, AND ATAPI
The IDE interface is closely related to the ISA interface—one of the general-purpose interfaces that can be found on the PC's motherboard along with the PCI interface slots. In fact, IDE is the part of ISA needed to support various internal devices, such as disk drives, CD-ROMs, internal Zip drives, and so on, that was redirected and turned into the different connector to save on the use of larger ISA slots. The only way to connect an external device to IDE is via the PC Card (former PCMCIA card) connector or using special docking devices (see Chapter 3).
ATA was the standard bus interface on the original IBM AT (Advanced Technology) computer and is also called IDE, for Integrated Drive Electronics, and Ultra ...
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