2280 Key M Pcie X4 Ssd Slot (Cn12); Smbus Header (Cn14) - AXIOMTEK IMB700 User Manual

IMB700 LGA4189 ATX Motherboard
2.5.6 M.2 2280 Key M PCIe x4 SSD slot (CN12)
The IMB700 comes with one M.2 2280 Key M slot with PCIe x4 signal for NVMe SSD
storage.
Pin Signal
1 GND
5 PEX3_RX-
9 GND
13 PEX3_TX+
17 PEX2_RX-
21 GND
25 PEX2_TX+
29 PEX1_RX-
33 GND
37 PEX1_TX+
41 PEX0_RX-
45 GND
49 PEX0_TX+
53 PEX0_REFCLKn
57 GND
CONNECTOR
61
Key M
65 CONNECTOR Key M 66
69 NC
73 GND
2.5.7

SMBus Header (CN14)

The CN14 (5x1-pin p=2.00mm) is for SMBus (System Management Bus) interface.
Pin Signal
1 SMB_SCL
3 GND
5 +5V
14
Pin Signal
2 +3.3V
6 NC
10 LED_1#
14 +3.3V
18 +3.3V
22 NC
26 NC
30 NC
34 NC
38 M.2_DEVSLP
42 NC
46 NC
50 PERST#
54 PEWAKE#
58 NC
CONNECTOR
62
Key M
CONNECTOR Key
M
70 +3.3V
74 +3.3V
Pin Signal
2 N/C
4 SMB_SDA
Pin Signal
3 GND
7 PEX3_RX+
11 PEX3_TX-
15 GND
19 PEX2_RX+
23 PEX2_TX-
27 GND
31 PEX1_RX+
35 PEX1_TX-
39 GND
43 PEX0_RX+
47 PEX0_TX-
51 GND
55 PEX0_REFCLKp
CONNECTOR
59
Key M
CONNECTOR
63
Key M
67 NC
71 GND
75 GND
Board and Pin Assignments
Pin Signal
4 +3.3V
8 NC
12 +3.3V
16 +3.3V
20 NC
24 NC
28 NC
32 NC
36 NC
40 NC
44 NC
48 NC
52 CLKREQ#
56 NC
CONNECTOR
60
Key M
CONNECTOR
64
Key M
68 NC
72 +3.3V