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7.15. M.2 Key M 2242 / 2280 Slot (M2M1)
The 3.5"-SBC-WLU supports M.2 modules in format 2242 or 2280 with Key M. The M.2 specification supports PCIe x4
and SATA 3.0 signals. The slot can be used to integrate an M.2 PCIe x4 SSD (NVMe) or M.2 SATA SSD the mainboard.
Figure 26: M.2 Key M 2242 / 2280 Slot M2M1
Table 32: Pin Assignment M2M1
Pin
Signal
1
GND
2
+3.3V
3
GND
4
+3.3V
5
PERn3
6
-
7
PERp3
8
-
9
GND
10
DAS / DSS# / LED1#
11
PETn3
12
+3.3V
13
PETp3
14
+3.3V
15
GND
16
+3.3V
17
PERn2
18
+3.3V
19
PERp2
20
-
21
GND
22
-
23
PETn2
24
-
25
PETp2
26
-
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Description
Ground
3.3 V power supply
Ground
3.3 V power supply
PCIe Lane 3 receiver pair (-)
PCIe Lane 3 receiver pair (+)
-
Ground
Device active signal / disable staggered spin-up / LED
PCIe Lane 3 transmitter pair (-)
3.3 V power supply
PCIe Lane 3 transmitter pair (+)
3.3 V power supply
Ground
3.3 V power supply
PCIe Lane 2 receiver pair (-)
3.3 V power supply
PCIe Lane 2 receiver pair (-)
Ground
PCIe Lane 2 transmitter pair (-)
PCIe Lane 2 transmitter pair (+)
3.5"-SBC-WLU - User Guide, Rev. 1.0
Note
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