PCI Express
x1, x4, x8, and x16 PCI Express Connector
Pin B
Pin
Signal
Pin
Signal
Pin
Signal
Pin
Signal
Pin
Signal
1
2
3
4
5
+12V
+12V
RSVD
GND
SMCLK
6
7
8
9
10
SMDAT
GND
+3.3 V
JTAG1
3.3vAux
11
12
13
14
15
WAKE#
RSVD
GND
PETp0
PETn0
16
17
18
19
20
GND
GND
PETp1
PETn1
21
22
23
24
25
GND
GND
PETp2
PETn2
GND
26
27
28
29
30
GND
PETp3
PETn3
GND
RSVD
31
32
33
34
35
PRSNT2#
GND
PETp4
PETn4
GND
36
37
38
39
40
GND
PETp5
PETn5
GND
GND
41
42
43
44
45
PETp6
PRTn6
GND
GND
PETp7
46
47
48
49
50
PETn7
GND
PRSNT2#
GND
PETp8
51
52
53
54
55
PETn8
GND
GND
PETp9
PETn9
56
57
58
59
60
GND
GND
PETp10
PETn10
GND
61
62
63
64
65
GND
PETp11
PETn11
GND
GND
66
67
68
69
70
PETp12
PETn12
GND
GND
PETp13
71
72
73
74
75
PETn13
GND
GND
PETp14
PETn14
76
77
78
79
80
GND
GND
PETp15
PETn15
GND
81
82
PRSNT2#
RSVD
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
124 Appendix A Connector Pin Assignments
Summary of Contents for A7L26UT#ABA
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Page 10: ...x ...
