Even though one of the biggest strengths of the HoloLens is the fact that it’s actually a standalone untethered computer that can be used in the field, for some use cases, where cloud computing or integration with other platforms is needed for example, you need to Leverage WiFi, 4G or 5G .
Luckily, with HoloLens 2, you can connect to a WiFi network or you can leverage the USB-C port to connect to a 4G, 5G or LTE dongle.