Final answer:
The Serial ATA (SATA) standard uses a 7-pin connector for data transfer between storage devices and the computer's motherboard.
Step-by-step explanation:
The Serial ATA (SATA) interface standard specifies a data cable connector with 7 pins. This connector is used to connect storage devices like hard drives and solid-state drives to the motherboard of a computer. The 7-pin connector is for data transfer, while an additional separate 15-pin connector is used for power. The SATA interface is known for its increased speed and efficiency compared to the older PATA (Parallel ATA) standard, which used a 40-pin connector.