A cellular modem via USB is a "USB modem." On a card, it can be an "air card," "data card" or "broadband card." Generic terms are "broadband adapter," "broadband modem," "cellular adapter," "3G or ...

The ‘dongle’ itself is a small stick that you can plug into a USB port on your laptop or other devices and it then acts as a WiFi hotspot. You can connect your device (and in some cases ...