| R13 | GPIO#1 | Debug Serial RX |
| R14 | GPIO#2 | Debug Serial TX |
| P14 | GPIO#3 | Reset Factory Button (Low effect) |
| H5 | GPIO#6 | RS485_2 TX/RX Enable |
| H1 | GPIO#7 | RS485_2 TX |
| H3 | GPIO#8 | RS485_2 RX |
| H2 | GPIO#11 | RS232 TX |
| H4 | GPIO#12 | RS232 RX |
| G17 | GPIO#13 | Watchdog |
| G16 | GPIO#14 | System LED (Low effect) |
| G18 | GPIO#15 | LTE 4G module SIM_CHECK (Low effect) |
| F16 | GPIO#16 | SIM_SELECT 0：SIM 1；1：SIM2 |
| G15 | GPIO#18 | Watchdog enable (Low effect) |
| G14 | GPIO#19 | WIFI module RESET |
| W18 | GPIO#22 | WIFI LED (Low effect) |
| W17 | GPIO#23 | VPN LED (Low effect) |
| Y18 | GPIO#24 | LTE_L weak signal LED (Low effect) |
| Y17 | GPIO#25 | LTE_M medium signal LED (Low effect) |
| V16 | GPIO#26 | LTE_H strong signal LED (Low effect) |
| V18 | GPIO#27 | DO (Low effect) |
| T17 | GPIO#28 | LORA LED (Low effect) |
| T18 | GPIO#29 | PCIE1 RESET (LoRA） |
| U16 | GPIO#30 | LTE 4G LED (Low effect) |
| U17 | GPIO#31 | DI (Low effect) |
| R17 | GPIO#33 | PCIE0 RESET（4G module） |
| G2 | GPIO#34 | SPI Flash CS |
| G4 | GPIO#35 | SPI LORA CS |