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3.3.9
M.2 2280 Socket 3 Key M NVMe Slot
M.2 NVMe Slot (Socket 3 Key M type 2280)
Pin
Signal
Pin
1
GND
3
GND
5
PCIe_GFX_Rx3-
7
PCIE_GFX_Rx3+
9
GND
11
PCIE_GFX_Tx3-
13
PCIE_GFX_Tx3+
15
GND
17
PCIE_GFX_Rx2-
19
PCIE_GFX_Rx2+
21
GND
23
PCIE_GFX_Tx2-
25
PCIE_GFX_Tx2+
27
GND
29
PCIE_GFX_Rx1-
31
PCIE_GFX_Rx1+
33
GND
35
PCIE_GFX_Tx1-
37
PCIE_GFX_Tx1+
39
GND
41
PCIE_GFX_Rx0-
43
PCIE_GFX_Rx0+
45
GND
47
PCIE_GFX_Tx0-
49
PCIE_GFX_Tx0+
51
GND
SBC-C90
SBC-C90 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: A.R. - Reviewed by C.M. Copyright © 2021 SECO S.p.A.
CN18
Signal
2
+3.3V_RUN
4
+3.3V_RUN
6
---
8
---
10
---
12
+3.3V_RUN
14
+3.3V_RUN
16
+3.3V_RUN
18
+3.3V_RUN
20
---
22
---
24
---
26
---
28
---
30
---
32
---
34
---
36
---
38
---
40
---
42
---
44
---
46
---
48
---
50
PCIE_RST#
52
CLK_REQ4#
Another possibility for connecting mass storage devices is given by
the M.2 Key M Slot, which allows the plugging of M.2 High Capacity
SSD drives with PCI-e x4 interface
The connector used for the M.2 SSD slot is CN18, which is a
standard 75 pin M.2 Key M connector, type LOTES p/n APCI0079-
P001A, H=3.2mm, with the pinout shown in the table on the left.
On the board there is also a Threaded Spacers which allows the placement of M.2 Socket 3
Key M PCI-e SSD modules in 2280size.
53
NVME_CLK-
55
NVME_CLK+
57
GND
67
---
69
---
71
GND
73
GND
75
GND
Signal Description
PCIE_GFX_Tx0+/ PCIE_GFX_Tx0-: PCI Express lane #0, Transmitting Output Differential pair
PCIE_GFX_Tx1+/ PCIE_GFX_Tx1-: PCI Express lane #1, Transmitting Output Differential pair
PCIE_GFX_Tx2+/ PCIE_GFX_Tx2-: PCI Express lane #2, Transmitting Output Differential pair
PCIE_GFX_Tx3+/ PCIE_GFX_Tx3-: PCI Express lane #3, Transmitting Output Differential pair
PCIE_GFX_Rx0+/ PCIE_GFX_Rx0-: PCI Express lane #0, Receiving Input Differential pair
PCIE_GFX_Rx1+/ PCIE_GFX_Rx1-: PCI Express lane #1, Receiving Input Differential pair
PCIE_GFX_Rx2+/ PCIE_GFX_Rx2-: PCI Express lane #2, Receiving Input Differential pair
PCIE_GFX_Rx3+/ PCIE_GFX_Rx3-: PCI Express lane #3, Receiving Input Differential pair
NVME_CLK+ / NVME_CLK-: PCI Express Reference Clock, Differential Pair
54
---
56
---
58
---
68
---
70
+3.3V_RUN
72
+3.3V_RUN
74
+3.3V_RUN
32
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