TEL0124 V2.1 SIM7600G-H shield Vin voltage range

Can the TEL0124 V2.1 SIM7600G-H shield be powered through its external VIN/GND input using a regulated 7.5 V DC, 3 A by an external power supply? I'd like to know what is the voltage range that V2.1 can accept in the Vin pin and if an external power source, such as a wall plugged power supply of 7.5 V can be used to power both the modem and the device itself.