11.4.2 Physical Characteristics; 11.4.3 Connector Requirements; 11.4.4 Electrical Description; 11.4.5 Pin Descriptions - Seagate ST400FM0093 Product Manual

11.4.2 Physical characteristics

This section defines physical interface connector.

11.4.3 Connector requirements

Contact a 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 Figures 23 and 24.

11.4.4 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.

11.4.5 Pin descriptions

This section provides a pin-out of the SAS device and a description of the functions provided by the pins.
Table 23 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 B Ground
S12* -Port B_out
S13* +Port B_out
S14 Port B Ground
* - Short pin to support hot plugging
[1] Behind a SAS Drive plug connector, P1 and P2 are only connected to each other.
NC - No connection in the drive.
Seagate 1200 SSD Product Manual, Rev. C
Signal type Pin
P1*
Diff. input pair P2*
P3
P4
Diff output pair P5
P6
P7
P8*
Diff. input pair P9*
P10
P11*
Diff output pair P12
P13
P14*
P15*
Signal name
[1]
Reserved
[1]
Reserved
NC (Vendor specific)
Ground
Ground
Ground
5 Volts charge
5 Volts
5 Volts
Ground
Ready LED
Ground
12 Volts charge
12 Volts
12 Volts
Signal type
Open collector out
74