Pci Express - HP dx2420 - Microtower PC Service & Reference Manual

76 PERp14
77 PERn14
78 GND
79 GND
80 PERp15
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

PCI Express

x1, x4, x8, and x16 PCI Express Connector
Pin B
Pin Signal
1 +12V
2 +12V
3 RSVD
4 GND
5 SMCLK
26 GND
27 PETp3
28 PETn3
29 GND
30 RSVD
51 PETn8
52 GND
53 GND
54 PETp9
55 PETn9
74 Appendix A Connector Pin Assignments
81 PERn15
82 GND
Pin Signal Pin
6 SMDAT 11
7 GND 12
8 +3.3 V 13
9 JTAG1 14
10 3.3vAux 15
31 PRSNT2# 36
32 GND 37
33 PETp4 38
34 PETn4 39
35 GND 40
56 GND 61
57 GND 62
58 PETp10 63
59 PETn10 64
60 GND 65
Signal Pin Signal
WAKE# 16 GND
RSVD 17 GND
GND 18 GND
PETp0 19 PETp1
PETn0 20 PETn1
GND 41 PETp6
PETp5 42 PRTn6
PETn5 43 GND
GND 44 GND
GND 45 PETp7
GND 66 PETp12
PETp11 67 PETn12
PETn11 68 GND
GND 69 GND
GND 70 PETp13
Pin Signal
21 GND
22 GND
23 PETp2
24 PETn2
25 GND
46 PETn7
47 GND
48 PRSNT2#
49 GND
50 PETp8
71 PETn13
72 GND
73 GND
74 PETp14
75 PETn14