Intel I/O Expansion Modules for Intel platforms hardware specification

Introduction Intel® I/O Expansion Modules for Intel® Platforms HWS
The following table details the pin-out of the I/O module connector:
Table 2. 80-pin I/O Module Connector Pin-Out
Pin
Signal
Signal
Pin
1
3.3V
12V
2
3
3.3V
12V
4
5
3.3V
12V
6
7
3.3V
12V
8
9
RSVD
FRU/TEMP ADDR [A0]
10
11
GND
5VSB
12
13
RSVD+
FM_IO_MODULE_EN
14
15
RSVD-
3.3VSTBY
16
17
GND
LED_GLOBAL ACT#
18
19
RSVD
FM_IOM_PRESENT_N
20
21
RSVD
WAKE#
22
23
GND
PERST#
24
25
SMB CLK
GND
26
27
SMB DAT
rIOM REFCLK+ [0]
28
29
GND
rIOM REFCLK- [0]
30
31
PCIe Gen3 Tn [7]]
GND
32
33
PCIe Gen3 Tp [7]
PCIe Gen3 Rn [7]
34
35
GND
PCIe Gen3 Rp [7]
36
37
PCIe Gen3 Tn [6]
GND
38
39
PCIe Gen3 Tp [6]
PCIe Gen3 Rn [6]
40
41
GND
PCIe Gen3 Rp [6]
42
43
PCIe Gen3 Tn [5]
GND
44
45
PCIe Gen3 Tp [5]
PCIe Gen3 Rn [5]
46
47
GND
PCIe Gen3 Rp [5]
48
49
PCIe Gen3 Tn [4]
GND
50
51
PCIe Gen3 Tp [4]
PCIe Gen3 Rn [4]
52
53
GND
PCIe Gen3 Rp [4]
54
55
PCIe Gen3 Tn [3]
GND
56
57
PCIe Gen3 Tp [3]
PCIe Gen3 Rn [3]
58
59
GND
PCIe Gen3 Rp [3]
60
61
PCIe Gen3 Tn [2]
GND
62
63
PCIe Gen3 Tp [2]
PCIe Gen3 Rn [2]
64
65
GND
PCIe Gen3 Rp [2]
66
67
PCIe Gen3 Tn [1]
GND
68
69
PCIe Gen3 Tp [1]
PCIe Gen3 Rn [1]
70
71
GND
PCIe Gen3 Rp [1]
72
73
PCIe Gen3 Tn [0]
GND
74
75
PCIe Gen3 Tp [0]
PCIe Gen3 Rn [0]
76
77
GND
PCIe Gen3 Rp [0]
78
79
RSVD
GND
80
Note: There are several pins reserved for future use.
Revision 1.2
Intel order number: G30021-004
2