Advantech EPC-R7200, Manual, Page: 26 / 45

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31 Connector KEY 32 UART_TXD
33 GND 34 UART_CTS
35 P 36 UART_RTS
37 PCIE_TX0_ 38 N/C
39 GND 40 N/C
41 P 42 N/C
43 PCIE_RX0- 44 N/C
45 GND 46 N/C
47 P 48 N/C
49 PCIE_CLK- 50 SUCLOCK_32KHz
51 GND 52 PCIE_RESET
53 PCIE_CLKREQ 54 W_DISABLE #1
55 PCIE_WAKE 56 W_DISABLE #2
57 GND 58 I2C_SDA
59 N/C 60 I2C_SCL
61 N/C 62 ALERT#
63 GND 64 N/C
65 N/C 66 N/C
67 N/C 68 N/C
69 GND 70 N/C
71 N/C 72 +3.3V
73 N/C 74 +3.3V
75 GND
2.5.5. M.2 3042 Key B Slot
EPC-R7200 provides one M.2 3042 Key B Slot for WWAN card.