The different types of SATA cables are used for different purposes. Let us discuss which SATA cable you can use for what: SATA Power Cable Connectors: SATA power cable connectors feature 15 pins and three pins within the connector are used to supply different voltages in a parallel manner. SATA Data Cable Connectors: The SATA data cable connector has seven conductors and has one plugged into the end port on the motherboard and the other end plugged into the back of a storage device e.g., SATA hard drive.