Two IDE/PATA drives, on the other hand, could share the same data cable, but only one could use it at a time and thus each required a distinct name. In fact, by the time ATA-2 was approved in 1996 ...

AHCI and IDE are two modes in which a hard drive communicates with the rest of the computer system using a SATA storage controller. SATA hard drives can operate in a backward-compatible PATA/IDE ...