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9.4.2
Physical characteristics
This section defines physical interface connector.
9.4.3
Connector requirements
Contact the preferred connector manufacturer for mating part information. Part numbers for SAS connectors will be provided in a future revision
of this publication when production parts are available from major connector manufacturers.
The SAS device connector is illustrated in
9.4.4
Electrical description
SAS drives use the device connector for:
• DC power
• SAS interface
• Activity LED
This connector is designed to either plug directly into a backpanel or accept cables.
9.4.5
Pin descriptions
This section provides a pin-out of the SAS device and a description of the functions provided by the pins.
Table 17 SAS pin descriptions
Pin
Signal name
S1
Port A Ground
S2*
+Port A_in
S3*
-Port A_in
S4
Port A Ground
S5*
-Port A_out
S6*
+Port A_out
S7
Port A Ground
S8
Port B Ground
S9*
+Port B_in
S10*
-Port B_in
S11
Port A Ground
S12*
-Port B_out
S13*
+Port B_out
S14
Port B Ground
*
Short pin to support hot plugging
**
Power Disable (T10 Industry Standard) for remote management of the end device. Allows power cycling / power saving to be controlled by
the host via interface pin 3.
†
P1 & P2 tied for visible host detection.
Seagate Exos X16 SAS Product Manual, Rev. A
Figure 7
and 8.
Signal type
Diff. input pair
Diff output pair
Diff. input pair
Diff output pair
Pin
Signal name
P1*
NC (reserved 3.3Volts)
P2*
NC (reserved 3.3Volts)
SAS Power Disable **
P3
P4
Ground
P5
Ground
P6
Ground
P7
5 Volts charge
P8*
5 Volts
P9*
5 Volts
P10
Ground
P11*
Ready LED
P12
Ground
P13
12 Volts charge
P14*
12 Volts
P15*
12 Volts
Interface requirements
Signal type
†
†
Open collector out
61
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