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PCI Express
x1, x4, x8, and x16 PCI Express Connector
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
52
PERp8
53
PERN8
54
GND
55
GND
76
PERp14
77
PERn14
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.
92
Pin
Signal
Pin
6
JTAG3
11
7
JTAG4
12
8
JTAG5
13
9
+3.3V
14
10
+3.3V
15
31
GND
36
32
RSVD
37
33
RSVD
38
34
GND
39
35
PERp4
40
56
PERp9
61
57
PERn9
62
58
GND
63
59
GND
64
60
PERp10
65
81
PERn15
82
GND
Signal
Pin
PERST#
16
PERp0
GND
17
PERn0
REFCLK+
18
GND
REFCLKGND
19
RSVD
PERn4
20
GND
GND
41
GND
GND
42
GND
PERp5
43
PERp6
PERn5
44
PERn6
PERn10
45
GND
GND
66
GND
GND
67
GND
PERp11
68
PERp12
PERn11
69
PERn12
70
GND
Signal
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
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