SBC-C41-pITX
SBC-C41-pITX User Manual - Rev. First Edition: 1.0 - Last Edition: 1.1 - Author: A.R./S.B. - Reviewed by M.B. Copyright © 2021 SECO S.p.A.
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3.3.7
M.2 3042 Socket 2 Key B SSD/WWAN Slot
The mass storage capabilities of the SBC-C41
board are completed by an M.2 SSD Slot, which
allow plugging M.2 Socket 2 Key B Solid State
Drives.
The same slot can be used alternatively for the
connection of Connectivity modules, using USB
3.0 interface.
The connector used for the M.2 SSD slot is CN14,
which is a standard 75 pin M.2 Key B connector,
type LOTES p/n APCI0087-P001A, H=8.5mm,
with the pinout shown in the table on the left.
On the SBC-C41 board there is also a Threaded Spacer which allows the placement
of M.2 Socket 2 Key B SSD or WWAN modules in 2260 or 3042 size.
Signal Description
/ USB_P2-: USB Port #2 differential pair; it is managed by
xHCI controller.
WAKE_ON_WWAN#:
V_ALW active low signal with 100k
Ω
pull-up resistor. It must be externally driven by the Connectivity module plugged in
the slot when it requires waking up the system (functionality not yet supported by the
BIOS).
US/USB_SSRX2-: USB Super Speed Port #2 receive differential pair; it
is managed by xHCI controller
M.2 SSD/WWAN Slot (Socket 2 Key B type 2260/3042) CN14
Pin Signal
Pin Signal
1
CONFIG_3
2
+3.3V_ALW
3
GND
4
+3.3V_ALW
5
GND
6
PWR_OFF#
7
8
KEYB_W_DISABLE1#
9
USB_P2-
10
---
11
GND
20
---
21
CONFIG_0
22
---
23
WAKE_ON_WWAN#
24
---
25
---
26
KEYB_W_DISABLE2#
27
GND
28
---
29
USB_SSRX2-
30
UIM_RST#
31
US
32
UIM_CLK
33
GND
34
UIM_DATA
35
USB_SSTX2-
36
UIM_PWR
37
US
38
---
39
GND
40
---
41
S
42
---
43
SATA_RX0-
44
---
45
GND
46
---
47
SATA_TX0-
48
---
49
S
50
PLT_RST#
51
GND
52
---
53
---
54
---
55
---
56
---
57
GND
58
---
59
---
60
---
61
---
62
---
63
---
64
---
65
---
66
UIM_DETECT
67
---
68
---
69
CONFIG_1
70
+3.3V_M2
71
GND
72
+3.3V_M2
73
GND
74
+3.3V_M2
75
CONFIG_2
