A device that adds 3G or 4G (LTE) cellular connectivity to laptops, desktop computers and various tablets. Typically available as an external USB module, for desktop computers, the modem may also ...

See PCI and PCI Express. Cellular wireless adapters, also called "cellular modems," "air cards," "broadband adapters" or "broadband cards," deliver the same 3G, 4G and 5G wireless service that ...