Pin Number | Usage | Device Plug | Host Plug |
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P1 | Ground | Ground | Ground |
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P2* | A+ | Transmit data | Receive data |
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P3* | A- | Transmit data | Receive data |
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P4 | Ground | Ground | Ground |
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P5** | B- | Receive data | Transmit data |
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P6** | B+ | Receive data | Transmit data |
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P7 | Ground | Ground | Ground |
*P2 and P3 differential signal pair **P5 and P6 differential signal pair
SATA Power Cable
Pin | Usage | Notes | Pin | Usage | Notes |
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P1 | V3.3 | 3.3 V power | P9 | V5 | 5 V power |
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P2 | V3.3 | 3.3 V power | P10 | Ground |
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P3 | V3.3 | 3.3 V power | P11 | Ground |
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P4 | Ground |
| P12 | Ground |
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P5 | Ground |
| P13 | V12 | 12 V power |
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P6 | Ground |
| P14 | V12 | 12 V power |
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P7 | V5 | 5 V power | P15 | V12 | 12 V power |
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P8 | V5 | 5 V power |
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48 Chapter 5 Serial and Parallel ATA Drive Guidelines and Features | ENWW |