Advantech SmartStart Series Start Manual page 7

SmartStart
Disconnect the router from the power supply before handling the SIM card!
3. Power
The router requires an external DC power supply. The DC voltage required is between
+9 and +36 V DC. The router has built-in protection against reverse polarity without signaling.
Connect the power supply cable to the PWR connector on the router's front panel; see the
figure below.
QSG-0002-EN, March 3, 2022 6 Released in the Czech Republic