Seagate ST800FM0012 Pulsar.2 SAS Product Manual - Page 74

12.4.2 Physical characteristics This section defines physical interface connector. 12.4.3 Connector 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 18 and 19. 12.4.4 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. 12.4.5 Pin descriptions This section provides a pin-out of the SAS device and a description of the functions provided by the pins. Table 24: Pin S1 S2* S3* S4 S5* S6* S7 S8 S9* S10* S11 S12* S13* S14 SAS pin descriptions 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 NC (reserved 3.3Volts) NC (reserved 3.3Volts) NC (reserved 3.3Volts) Ground Ground Ground 5 Volts charge 5 Volts 5 Volts Ground Ready LED Ground 12 Volts charge 12 Volts 12 Volts Open collector out Signal type Signal name Port A Ground +Port A_in -Port A_in Port A Ground -Port A_out +Port A_out Port A Ground Port B Ground +Port B_in -Port B_in Port A Ground -Port B_out +Port B_out Port B Ground * - Short pin to support hot plugging NC - No connection in the drive. 66 Pulsar.2 SAS Product Manual, Rev. B