The is a USB-based 3G/4G LTE dongle. The "Movitel" branding indicates that the device is either locked to the Movitel network (a joint venture between Vietnam's Viettel and Mozambique's state-owned companies) or comes pre-configured with Movitel APN settings.
You can choose between a "Quick" or "Normal" installation during the setup wizard: Quick Installation: Select "Quick Install" and click dcom 35g movitel download setup link