The SATA 15-pin power connector is one of the standard peripheral power connectors in computers. It is the standard connector for all SATA-based hard drives and optical drives.

SATA power cables extend from the power supply and are only intended to be located inside the computer case. This is in contrast to SATA data cables, which are also usually stored behind the case, but can also connect to external SATA (eSATA) devices such as external hard drives via a SATA to eSATA bracket.

A pinout is a reference that describes the pins or contacts to which an electrical device or connector connects.

Below is the pinout for the standard SATA 15-pin peripheral power connector according to the ATX specification (version 2.2). If you use this pinout table to test power supply voltages, please note that the voltages must fall within the ATX specified tolerances.