S&T Kontron 3.5"-SBC-WLU, User Manual, Page: 57 / 90

3.5"-SBC-WLU - User Guide, Rev. 1.8
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7.16. Micro SIM Card Holder for M.2 Key B (CN9)
The Micro SIM card holder CN9 is intended to accommodate an Micro SIM card and connected to UIM signals on the
M.2 Key B slot.
Figure 27: Micro SIM Card Holder CN9
Table 34: Pin Assignment CN9
Pin Signal Description Note
C1 VCC Power +3.3 V
C2 GND Ground
C3 RST Reset signal
C4 VPP Programming voltage input
C5 CLK Clock signal
C6 IO Input or Output for serial data