Seagate ST300MP0004 Savvio 15K.3 SAS Product Manual - Page 70
Activity LED
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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 14 and 15. 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 13: SAS pin descriptions Pin Signal name Signal type Pin Signal name Signal type S1 Port A Ground P1* NC (reserved 3.3Volts) S2* +Port A_in Diff. input pair P2* NC (reserved 3.3Volts) S3* -Port A_in P3 NC (reserved 3.3Volts) S4 Port A Ground P4 Ground S5* -Port A_out Diff output pair P5 Ground S6* +Port A_out P6 Ground S7 Port A Ground P7 5 Volts charge S8 Port B Ground P8* 5 Volts S9* +Port B_in Diff. input pair P9* 5 Volts S10* -Port B_in P10 Ground S11 Port A Ground P11* Ready LED Open collector out S12* -Port B_out Diff output pair P12 Ground S13* +Port B_out P13 12 Volts charge S14 Port B Ground P14* 12 Volts P15* 12 Volts * - Short pin to support hot plugging NC - No connection in the drive. 62 Savvio 15K.3 SAS Product Manual, Rev. E