3.5"-SBC-WLU - User Guide, Rev. 1.8
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7.13.
M.2 Key B 3042 Slot (M2B1)
The 3.5"-SBC-WLU supports M.2 modules in format 3042 with Key B. The M.2 specification supports PCIe x1, USB 2.0
and USB 3.2 signals as well as UIM signals connected to Micro SIM card holder CN9. The slot can be used to integrate
WWAN communication to the mainboard.
Figure 24: M.2 Key B 2042 Slot M2B1
Table 31: Pin Assignment M2B1
Pin
Signal
Description
Note
1
-
2
+3.3V
3.3 V power supply
3
GND
Ground
4
+3.3V
3.3 V power supply
5
GND
Ground
6
PWROFF#
M.2 module power enable
7
USB-D+
USB 2.0 data differential pair (+)
8
DISABLE#
Wireless disable
9
USB-D-
USB 2.0 data differential pair (-)
10
LED#
Device active signal
11
GND
Ground
12
KEY
13
KEY
14
KEY
15
KEY
16
KEY
17
KEY
18
KEY
19
KEY
20
-
21
-
22
-
23
-