Compaq dx2810 Service Reference Guide: HP Compaq dx2810 and dx2818 Business PC - Page 142

PCI Express x1, x4, x8, and x16 PCI Express Connector Pin A Pi Signal n Pi Signal n Pi Signal n 1 PRSNT1 6 JTAG3 11 PERST# 2 +12V 7 JTAG4 12 GND 3 +12V 8 JTAG5 13 REFCLK+ 4 GND 9 +3.3V 14 REFCLK- 5 JTAG2 10 +3.3V 15 GND 26 PERn(2) 31 GND 36 PERn4 27 GND 32 RSVD 37 GND 28 GND 33 RSVD 38 GND 29 PERp3 34 GND 39 PERp5 30 PERn3 35 PERp4 40 PERn5 51 GND 56 PERp9 61 PERn10 52 PERp8 57 PERn9 62 GND 53 PERN8 58 GND 63 GND 54 GND 59 GND 64 PERp11 55 GND 60 PERp10 65 PERn11 76 PERp14 81 PERn15 77 PERn14 82 GND 78 GND 79 GND 80 PERp15 Pin B information is on the next page NOTE: x1 PCI Express uses pins 1-18 x4 PCI Express uses pins 1-32 x8 PCI Express uses pins 1-49 x16 PCI Express uses pins 1-8 Pin Signal 16 PERp0 17 PERn0 18 GND 19 RSVD 20 GND 41 GND 42 GND 43 PERp6 44 PERn6 45 GND 66 GND 67 GND 68 PERp12 69 PERn12 70 GND Pi Signal n 21 PERp1 22 PERn1 23 GND 24 GND 25 PERp2 46 GND 47 PERp7 48 PERn7 49 GND 50 RSVD 71 GND 72 PERp13 73 PERn13 74 GND 75 GND 132 Appendix A Connector Pin Assignments