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## C.6 Serial Attached SCSI (SAS) Connector

The SAS connector is located on the motherboard. It is connected with a SAS cable to the disk drive backplane.

Figure C-6 SAS Connector

SAS Connector Pinouts lists the pinouts for the SAS connector.

Table C-1 SAS Connector Pinouts

Signal Segment | S1 | Gnd | Second mate
S2 | TX+ | Transmit from PHY to hard drive
S3 | TX-
S4 | Gnd | Second mate
S5 | RX- | Receive from hard drive to PHY
S6 | RX+
S7 | Gnd | Second mate
Back-side Signal | S8 | Gnd | Second mate
S9 |  |
S10 |  |
S11 | Gnd | Second mate
S12 |  |
S13 |  |
| S14 | Gnd | Second mate
Power Segment | P1 | 3.3V | Not Supported
P2 | 3.3V | Not Supported
P3 | 3.3V | Not Supported
P4 | Gnd | First mate
P5 | Gnd | Second mate
P6 | Gnd | Second mate
P7 | 5.0V | Pre-charge, second mate
P8 | 5.0V |
P9 | 5.0V |
P10 | Gnd | Second mate
P11 | Reserved | Should be grounded
P12 | Gnd | First mate
P13 | 12.0V | Pre-charge, second mate
P14 | 12.0V |
P15 | 12.0V |

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