This interface is still in wide use. It is found on IDE/ATA hard drives, optical drives, and tape drives. Many motherboards come with a pair of 40-pin controllers (described as primary and secondary). Each controller can handle one or two drives, so most standard PCs can have a maximum of four IDE drives. A few years ago, the IDE/ATA standard for hard drives was improved, and a new cable was specified. This new standard is referenced by many names—Ultra ATA, Ultra-DMA, Ultra-66/100/133, etc. Ultra ATA hard drive cables use an 80-conductor ribbon cable, although the same 40-pin socket/header interface is still used.
It is used in Raspberry PI B+, B2 Model for the GPIO