Compaq dx2308 HP Compaq dx2300 and dx2308 Business PC Service Reference Guide, - Page 84
SATA Data and Power, PCI Express
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SATA Data and Power Drive Connector Pin Signal S1 Ground S5 BP1 Ground P5 BP9 V 5 P13 V 12 *S = Data, P = Power Pin Signal S2 A+ S6 B+ P2 V 3.3 P6 Ground P10 Ground P14 V12 PCI Express x1, x4, x8, and x16 PCI Express Connector Pin Signal S3 AS7 Ground P3 V 3.3 P7 V 5 P11 Reserved P15 V 12 Pin Signal S4 Ground P4 Ground P8 V 5 P12 Ground Pin A Pin Signal 1 PRSNT1 2 +12V 3 +12V 4 GND 5 JTAG2 26 PERn(2) 27 GND 28 GND 29 PERp3 30 PERn3 51 GND Pin Signal 6 JTAG3 7 JTAG4 8 JTAG5 9 +3.3V 10 +3.3V 31 GND 32 RSVD 33 RSVD 34 GND 35 PERp4 56 PERp9 Pin Signal 11 PERST# 12 GND 13 REFCLK+ 14 REFCLK15 GND 36 PERn4 37 GND 38 GND 39 PERp5 40 PERn5 61 PERn10 Pin Signal 16 PERp0 17 PERn0 18 GND 19 RSVD 20 GND 41 GND 42 GND 43 PERp6 44 PERn6 45 GND 66 GND 76 Appendix A Connector Pin Assignments Pin Signal 21 PERp1 22 PERn1 23 GND 24 GND 25 PERp2 46 GND 47 PERp7 48 PERn7 49 GND 50 RSVD 71 GND ENWW