In storage devices, there are two different types of connection interfaces. Parallel ATA and Serial ATA. Both of them connect storage devices to the computer system and other devices. PATA connections were used in the old generation computers but the SATA is a new standard that comes in all new computers. In this data recovery training session, we will discuss about the connection interface of the hard disk and will learn about the type of connection interface used in hard disk and optical drives and their features.