It’s the standard connector for all SATA-basedhard drivesandoptical drives.
SATA power cables protrude from the power supply unit and are meant to reside only inside thecomputer case.
The pinout tables for those connectors differ from the one shown here.
Lifewire / Tim Fisher
TheStarTech 4-pin to 15-pin power cable adapteris one example.
While a SATA power cable has 15 pins, SATA data cables have just seven.
