If they look like the connectors on the bottom drive, it's a PATA optical drive. Or to put it more simply, if your failed CD-RW or DVD-RW drive has connections that look like the top drive in the picture, it's a SATA optical drive. SATA (serial ATA) drives have two tongues of conductors, the smaller of which is for the data cable and the larger of which is for the power cable. They are now obsolete, and replacements are hard to find. PATA (parallel ATA) drives have two rows of pins for the ribbon data cable, and a row of four larger pins for the power connector. The easiest way to tell what kind of interface a drive has is simply to look at the connectors. In that context, it also makes sense to review the two kinds of drive interfaces because some visitors may be replacing older PATA optical drives. On the other hand, my site stats suggest that a lot of people land on this page because they want to replace a failed CD or DVD device so it does serve a purpose.
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