Serial ATA (SATA) power connector pinout

connector or cable wiring scheme

15 pin SATA power connector
at the motheboard

Pin	Signal
1	+3.3VDC
2	+3.3VDC
3	+3.3VDC
4	GND
5	GND
6	GND
7	+5VDC
8	+5VDC
9	+5VDC
10	GND
11	GND
12	GND
13	+12VDC
14	+12VDC
15	+12VDC

Pins 3,7,13 are pre-charge. Pin 11 may be used for other purposes than GND.

Pins 1, 2, and 3 are optional as well, as evidenced by some adapter cables that connect the drives to older PSUs. These are usually Y-adapters that have the four-pin drive connector on the other end.

Pinouts.ru > ATX, BTX, WTX and other power supply cables connectors pinouts listing > Pinout of Serial ATA (SATA) power connector and layout of 15 pin SATA power connector	Document status:	correct
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