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.
32
3.3.9
M.2 2280 Socket 3 Key M NVMe Slot
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.
Signal Description
PCIE_/ PCIE_GFX_Tx0-: PCI Express lane #0, Transmitting Output Differential pair
PCIE_/ PCIE_GFX_Tx1-: PCI Express lane #1, Transmitting Output Differential pair
PCIE_/ PCIE_GFX_Tx2-: PCI Express lane #2, Transmitting Output Differential pair
PCIE_/ PCIE_GFX_Tx3-: PCI Express lane #3, Transmitting Output Differential pair
PCIE_/ PCIE_GFX_Rx0-: PCI Express lane #0, Receiving Input Differential pair
PCIE_/ PCIE_GFX_Rx1-: PCI Express lane #1, Receiving Input Differential pair
PCIE_/ PCIE_GFX_Rx2-: PCI Express lane #2, Receiving Input Differential pair
PCIE_/ PCIE_GFX_Rx3-: PCI Express lane #3, Receiving Input Differential pair
N /
NVME_CLK-: PCI Express Reference Clock, Differential Pair
M.2 NVMe Slot (Socket 3 Key M type 2280) CN18
Pin Signal
Pin Signal
1
GND
2
+3.3V_RUN
3
GND
4
+3.3V_RUN
5
PCIe_GFX_Rx3-
6
---
7
PCIE_
8
---
9
GND
10
---
11
PCIE_GFX_Tx3-
12
+3.3V_RUN
13
PCIE_
14
+3.3V_RUN
15
GND
16
+3.3V_RUN
17
PCIE_GFX_Rx2-
18
+3.3V_RUN
19
PCIE_
20
---
21
GND
22
---
23
PCIE_GFX_Tx2-
24
---
25
PCIE_
26
---
27
GND
28
---
29
PCIE_GFX_Rx1-
30
---
31
PCIE_
32
---
33
GND
34
---
35
PCIE_GFX_Tx1-
36
---
37
PCIE_
38
---
39
GND
40
---
41
PCIE_GFX_Rx0-
42
---
43
PCIE_
44
---
45
GND
46
---
47
PCIE_GFX_Tx0-
48
---
49
PCIE_
50
PCIE_RST#
51
GND
52
CLK_REQ4#
53
NVME_CLK-
54
---
55
N
56
---
57
GND
58
---
67
---
68
---
69
---
70
+3.3V_RUN
71
GND
72
+3.3V_RUN
73
GND
74
+3.3V_RUN
75
GND
