SATA Power

Connector pinout

Pin Signal
1 +3.3V (obsolete)
2 +3.3V (obsolete)
3 +3.3V precharge (obsolete)
4 GND
5 GND
6 GND
7 +5V precharge
8 +5V
9 +5V
10 GND
11 Optional
12 GND
13 +12V precharge
14 +12V
15 +12V

Precharge

SATA power connector is designed to support hotplug and reduce inrush current when connecting a HDD.
This is done by using different pin length on connector to ensure that connecting sequence occurs as follow :

  1. Ground
  2. 1x contact on each power rail named as “precharge” contact
  3. Other contacts

Recommended precharge resistance value is between 10 and 20 Ohms.

  • Bookmark at
  • Bookmark "SATA Power" at del.icio.us
  • Bookmark "SATA Power" at Digg
  • Bookmark "SATA Power" at blogmarks
  • Bookmark "SATA Power" at Google
  • Bookmark "SATA Power" at Facebook
  • Bookmark "SATA Power" at Twitter