Datasheet

M.2, Key E Expansion Slot Pin Description：
M.2 Key E Expansion Slot
Pin# Module PinName ModulePin# Usage/Description Type/Dir
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
51
53
55
57
59
61
63
65
67
69
71
73
75
– Ground
USB2_D_P 123
USB2.0Data Bidir
USB2_D_N 121
– Ground Ground
– – Unused Unused
– – Key Unused
– – Ground Ground
PEX1_TX0_P 174
PCIe#1TransmitLane0 Output
PEX1_TX0_N 172
– – Ground Ground
PEX1_RX0_P 169
PCIe#1Receive Lane0 Input
PEX1_RX0_N 167
– – Ground Ground
PEX1_CLK_P 175
PCIe#1 Referencecloc
k Output
PEX1_CLK_N 173
– – Ground Ground
PEX1_CLKREQ* 182 PCIe#1ClockRequest Bidir,3.3V
PEX_WAKE* 179 PCIeWake Input,3.3V
– – Ground Ground
– – Unused Unused
– – Ground Ground
– – Unused Unused
– – Ground Ground
– – Unused Unused
– – Ground Ground
Ground
12