Seagate ST33000652SS Physical characteristics, Connector requirements, Electrical description

12.4.2Physical characteristics

This section defines physical interface connector.

12.4.3Connector requirements

Contact your 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 11 and 12.

12.4.4Electrical 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.

12.4.5Pin descriptions

This section provides a pin-out of the SAS device and a description of the functions provided by the pins.

Table 11: SAS pin descriptions

Pin	Signal name	Signal type
S1	Port A Ground
S2*	+Port A_in	Diff. input pair
S3*	-Port A_in
S4	Port A Ground
S5*	-Port A_out	Diff output pair
S6*	+Port A_out
S7	Port A Ground
S8	Port B Ground
S9*	+Port B_in	Diff. input pair
S10*	-Port B_in
S11	Port A Ground
S12*	-Port B_out	Diff output pair
S13*	+Port B_out
S14	Port B Ground

*- Short pin to support hot plugging NC - No connection in the drive.

Pin	Signal name	Signal type
P1*	NC (reserved 3.3Volts)
P2*	NC (reserved 3.3Volts)
P3	NC (reserved 3.3Volts)
P4	Ground
P5	Ground
P6	Ground
P7	5 Volts charge
P8*	5 Volts
P9*	5 Volts
P10	Ground
P11*	Ready LED	Open collector out
P12	Ground
P13	12 Volts charge
P14*	12 Volts
P15*	12 Volts

58 Constellation ES.2 SAS Product Manual, Rev. D