IEI Technology WAFER-EHL Series, User Manual

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WAFER-EHL SBC
Page 39
3.2.23 M.2 A-key Slot
CN Label: M2_A_KEY
CN Type: M.2 A-key slot
CN Location: See Figure 3-24
CN Pinouts: See Table 3-25
The M.2 slot is keyed in the A position and accepts 2230 size of M.2 modules. The M.2 slot
supports PCIe Gen3 x1 and USB 2.0 signals.
Figure 3-24: M.2 A-key Slot Location
Pin Description Pin Description
1 GND 2 +V3.3A
3 USB+ 4 +V3.3A
5 USB- 6 NC
7 GND 8 Module Key
9 Module Key 10 Module Key
11 Module Key 12 Module Key
13 Module Key 14 Module Key
15 Module Key 16 NC
17 NC 18 GND
19 NC 20 NC
21 NC 22 NC
23 GND 24 GND