接地("0")時，HDD動作。浮接(空接)時，HDD等待Controller信號驅動。不是每一種HDD都可以支援。
SATA Power Connector
| Pin # | Mating | Function | |
|---|---|---|---|
| — | Coding notch | ||
| 1 | 3rd | 3.3 V | |
| 2 | 3rd | ||
| 3 | 2nd | ||
| 4 | 1st | Ground | |
| 5 | 2nd | ||
| 6 | 2nd | ||
| 7 | 2nd | 5 V | |
| 8 | 3rd | ||
| 9 | 3rd | ||
| 10 | 2nd | Ground | |
| 11 | 3rd | Staggered spinup/activity (in supporting drives) | |
| 12 | 1st | Ground | |
| 13 | 2nd | 12 V | |
| 14 | 3rd | ||
| 15 | 3rd | ||
SATA DATA Connector
| Pin # | Mating | Function | |
|---|---|---|---|
| 1 | 1st | Ground | |
| 2 | 2nd | A+ (Transmit) | |
| 3 | 2nd | A− (Transmit) | |
| 4 | 1st | Ground | |
| 5 | 2nd | B− (Receive) | |
| 6 | 2nd | B+ (Receive) | |
| 7 | 1st | Ground | |
| — | Coding notch | ||
WD有幾款硬碟有支援ATA Command Base去喚醒它，可以把預設置設成電源關閉(Power Up in Standby)。
Staggered Spin-Up supported HDD list:
http://highpoint-tech.com/PDF/RR23xx/RR23xx_Compatibility_List.pdf
Effectively there have been 3 attempts by the standards to initiate Staggered Spin:
Effectively there have been 3 attempts by the standards to initiate Staggered Spin:
- Original – Drive would not spin until PHY Ready was achieved. That was not really followed and has gone by the wayside with Microsoft requirements for power to boot time for Windows systems.
- P11 - If a drive implements P11 then the drive relies on the host to manage the state of P11 to enable/disable the drive to spin on power. If P11 is set to enable DSS then the drive will not spin until PHY Ready is achieved.
- PUIS – Power In Standby – If PUIS is enabled the drive will power up and remain in spun down state until the drive receives a Set Feature command instructing the drive to spin or until the drive receives a command that requires media access.
