Key M Socket; Table 36: Pin Assignment M.2 Key M Socket; Figure 30: M.2 Key M Socket - Kontron MITX-CFL0 Series User Manual

7.14. M.2 Key M Socket
The MITX-CFL0 Series has an M.2 Key M socket for a Type 2242 / 2280 module. The M.2 Key M socket supports PCIe
x4 signals, allowing users to install an M.2 PCIe SSD.

Figure 30: M.2 Key M Socket

Table 36: Pin Assignment M.2 Key M Socket

Pin Signal
1 GND
2 +3.3V
3 GND
4 +3.3V
5 PERn3
6 NC
7 PERp3
8 NC
9 GND
10 LED1#
11 PETn3
12 +3.3V
13 PETp3
14 +3.3V
15 GND
16 +3.3V
17 PERn2
18 +3.3V
19 PERp2
20 NC
21 GND
22 NC
23 PETn2
24 NC
25 PETp2
26 NC
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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
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 (+)
MITX-CFL0 Series - User Guide, Rev. 1.1
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