SAS Ports
The eight SAS connectors are located on the drive backplane inside the server. Four of the
connectors also can be used by NVMe drives.
The following table lists the pinouts for the SAS connector.
|
|
|
|
Signal segment
(S1 to S7)
|
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 to S14)
|
S8 |
Gnd |
Second mate |
S9 |
|
|
S10 |
|
|
S11 |
Gnd |
Second mate |
S12 |
|
|
S13 |
|
|
S14 |
Gnd |
Second mate |
Power segment
(P1 to P15)
|
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 |
|
|