Parallel ATA
Parallel ATA is a way to connect storage devices, such as Hard disks, solid-state drives, and CD-ROM drives inside personal computers. The standard is maintained by X3/INCITS committee T13.
It used to be called Advanced Technology Attachment with Packet Interface (ATA/ATAPI). ATA/ATAPI is the result of a long history of development. It is an evolution of the AT Attachment Interface, which was itself evolved in several stages from Western Digital's original Integrated Drive Electronics interface. As a result, many near-synonyms for ATA/ATAPI and its previous incarnations exist, including abbreviations such as IDE which are still in common informal use. With the market introduction of Serial ATA in 2003, the original ATA was retroactively renamed Parallel ATA (PATA).
Parallel ATA standards allow cable lengths up to only 18 inches (46 centimeters). Because of this length limit the technology normally appears as an internal computer storage interface. For many years ATA provided the most common and the least expensive interface for this application. As of 2007, it has largely been replaced by Serial ATA (SATA) in new systems. Older computers based on Parallel ATA are still widely-used in embedded and industrial applications.
Parallel ATA Media
Example of a 1992 80386 PC motherboard with nothing built in other than memory, keyboard, processor, cache, realtime clock, and slots. Such basic motherboards could have been outfitted with either the ST-506 or ATA interface, but usually not both. A single 2-drive ATA interface and a floppy interface was added to this system via the 16-bit ISA card.
An Oak Technology Mozart 16 16-bit ISA sound card, from when the CDROM drive interface had not yet been standardized. This card offers four separate interface connectors for IDE, Panasonic, Mitsumi, and Sony CDROM drives, but only one connector could be used since they all shared the same interface wiring.
A SoundBlaster 32 16-bit ISA sound card, from after connector standardization had occurred, with an IDE interface for the CDROM drive.